Opinion
BROUSSARD, J.
Defendants appeal from a judgment awarding plaintiff sanitation district damages and prejudgment interest in connection with defendant union’s involvement in a labor strike against plaintiff. The case squarely presents issues of great import to public sector labor-management relations, namely whether all strikes by public employees are illegal and, if so, whether the striking union is liable in tort for compensatory damages. After careful review of a long line of case law and policy arguments, we conclude that the common law prohibition against all public employee strikes is no longer supportable. Therefore, the judgment for the plaintiff finding the strike to be unlawful and awarding damages, interest and costs must be reversed.
I. Statement of the Case. Defendant union (Local 660 or the union) is a labor organization affiliated with the Service Employees International Union, AFL-CIO, and has been the certified bargaining representative of the blue collar employees of the Los Angeles Sanitation District since 1973. Plaintiff is one of 27 sanitation [568]*568districts within Los Angeles County1 and is charged with providing, operating and maintaining sewage transport and treatment facilities and landfill disposal sites throughout the county.2 The District employs some 500 workers who are directly or indirectly responsible for the operation and maintenance of its facilities and who are members of, or represented by, Local 660. Since 1973, the District and Local 660 have bargained concerning wages, hours and working conditions pursuant to the Meyers-Milias-Brown Act (MMBA). (Gov. Code, §§ 3500-3511.) Each year these negotiations have resulted in a binding labor contract or memorandum of understanding (MOU). (See Glendale City Employees’ Assn. v. City of Glendale (1975) 15 Cal.3d 328 [124 Cal.Rptr. 513, 540 P.2d 609].)
On July 5, 1976, approximately 75 percent of the District’s employees went out on strike after negotiations between the District and the union for a new wage and benefit agreement reached an impasse and failed to produce a new MOU. The District promptly filed a complaint for injunctive relief and damages and was granted a temporary restraining order. The strike continued for approximately 11 days, during which time the District was able to maintain its facilities and operations through the efforts of management personnel and certain union members who chose not to strike.3 On July 16, the employees voted to accept a tentative agreement on a new MOU, the terms of which were identical to the District’s offer prior to the strike.
The District then proceeded with the instant action for tort damages. The trial court found the strike to be unlawful and in violation of the public policy of the State of California and thus awarded the District $246,904 in compensatory damages,4 prejudgment interest in the amount of $87,615.22 and costs of $874.65.
[569]*569II. The Traditional Prohibition Against Public Employee Strikes.
Common law decisions in other jurisdictions at one time held that no employee, whether public or private, had a right to strike in concert with fellow workers. In fact, such collective action was generally viewed as a conspiracy and held subject to both civil and criminal sanctions.5 Over the course of the 20th century, however, courts and legislatures gradually acted to change these laws as they applied to private sector employees; today, the right to strike is generally accepted as indispensable to the system of collective bargaining and negotiation, which characterizes labor-management relations in the private sector.6
By contrast, American law continues to regard public sector strikes in a substantially different manner. A strike by employees of the United States government may still be treated as a crime,7 and strikes by state and local employees have been explicitly allowed by courts or statute in only 11 states.8
[570]*570Contrary to the assertions of the plaintiff as well as various holdings of the Court of Appeal,9 this court has repeatedly stated that the legality of strikes by public employees in California has remained an open question. In Los Angeles Met. Transit Authority v. Brotherhood of Railroad Trainmen (1960) 54 Cal.2d 684, 687-688 [8 Cal.Rptr. 1, 355 P.2d 905], this court stated in dictum that “[i]n the absence of legislative authorization public employees in general do not have the right to strike ...” but proceeded to hold that a statute affording public transit workers the right “ ‘to engage in other concerted activities for the purpose of collectively bargaining or other mutual aid or protection’ ” granted these employees a right to strike. However, in our very next opinion on the issue, In re Berry (1968) 68 Cal.2d 137 [65 Cal.Rptr. 273, 436 P.2d 273], we invalidated an injunction against striking public employees as unconstitutionally overbroad, and expressly reserved opinion on “the question whether strikes by public employees can be lawfully enjoined.” (Id., p. 151.)
In our next opportunity to examine public employee strikes, City and County of San Francisco v. Cooper (1975) 13 Cal.3d 898 [120 Cal.Rptr. 707, 534 P.2d 403], which involved a suit challenging the validity of a strike settlement agreement enacted by the city, we held only that such settlement agreements are valid. After noting the Court of Appeal holdings that public employee strikes are illegal and the employees’ counterargument that such strikes are impliedly authorized by statute, our unanimous opinion declared that we had no occasion to resolve that controversy in that action. (Id., p. 912.)
In a similar vein, this court has carefully and explicitly reserved judgment on the issue of the legality of public employee strikes on at least three other occasions in recent years.10 Indeed, our reluctance to address the issue head-on has elicited critical commentary from both dissenting and concurring [571]*571opinions, which have urged us to resolve the question once and for all.11 While we had ample reason for deciding the aforementioned cases without determining the broader question of the right of public employees to strike, the instant case presents us with the proper circumstances for direct consideration of this fundamental issue.
Before commencing our discussion, however, we must note that the Legislature has also chosen to reserve judgment on the general legality of strikes in the public sector. As Justice Grodin observed in his concurring opinion in El Rancho Unified School Dist. v. National Education Assn., supra, 33 Cal.3d 946, 964, “the Legislature itself has steadfastly refrained from providing clearcut guidance.” With the exception of firefighters (Lab. Code, § 1962), no statutory prohibition against strikes by public employees in this state exists.12 The MMBA, the statute under which the present controversy arose, does not directly address the question of strikes.
The MMBA sets forth the rights of municipal and county employees in California.13 (Gov. Code, §§ 3500-3511.) The MMBA protects the right of such employees “to form, join, and participate in the activities of employee [572]*572organizations ... for the purpose of representation on all matters of employer-employee relations.” It also requires public employers to “meet and confer” in good faith with employee representatives on all issues within the scope of representation. As explained in its preamble, one of the MMBA’s main purposes is to improve communications between public employees and their employers by providing a reasonable method for resolving disputes. A further stated purpose is to promote improved personnel relations by “providing a uniform basis for recognizing the right of public employees to join organizations of their own choice.”14
On its face, the MMBA neither denies nor grants local employees the right to strike. This omission is noteworthy since the Legislature has not hesitated to expressly prohibit strikes for certain classes of public employees. For example, the above-noted prohibition against strikes by firefighters was enacted nine years before the passage of the MMBA and remains in effect today. Moreover, the MMBA includes firefighters within its provisions. Thus, the absence of any such limitation on other public employees covered by the MMBA at the very least implies a lack of legislative intent to use the MMBA to enact a general strike prohibition.15
Plaintiffs have suggested that section 3509 of the MMBA must be construed as a general prohibition on the right to strike because it specifically precludes the application of Labor Code section 92316 to public em[573]*573ployees. Labor Code section 923 has been construed by this court to protect the right of private sector employees to strike (see Petri Cleaners, Inc. v. Automotive Employees, etc. Local No. 88 (1960) 53 Cal.2d 455 [2 Cal.Rptr. 470, 349 P.2d 76]); yet, an examination of other California statutes governing public employees makes it perfectly clear that section 3509 was not included in the MMBA as a means for prohibiting strikes.
A provision identical to section 3509 is contained in the statutes governing educational employees and firefighters. However, an explicit strike prohibition is included in the firefighters statute in addition to this provision. The fact that the Legislature felt it necessary to include this express strike prohibition clearly indicates that it neither intended nor expected its preclusion of section 923 to serve as a blanket prohibition against strikes. Furthermore, in San Diego Teachers Assn. v. Superior Court, supra, 24 Cal.3d at page 13, this court interpreted section 3549 of the EERA, a provision identical to section 3509 of the MMBA, as specifically not prohibiting strikes. Therefore, plaintiff’s assertion that section 3509 must be read as a legislative prohibition of public employee strikes cannot be sustained.17
In sum, the MMBA establishes a system of rights and protections for public employees which closely mirrors those enjoyed by workers in the private sector. The Legislature, however, intentionally avoided the inclusion of any provision which could be construed as either a blanket grant or prohibition of a right to strike, thus leaving the issue shrouded in ambiguity. In the absence of clear legislative directive on this crucial matter, it becomes the task of the judiciary to determine whether, under the law, strikes by public employees should be viewed as a prohibited tort.
HI. The Common Law Prohibition Against Public Employee Strikes.
As noted above, the Court of Appeal and various lower courts in this and other jurisdictions have repeatedly stated that, absent a specific statutory grant, all strikes by public employees are per se illegal. A variety of policy rationales and legal justifications have traditionally been advanced in support of this common law “rule,” and numerous articles and scholarly [574]*574treatises have been devoted to debating their respective merits.18 The various justifications for the common law prohibition can be summarized into four basic arguments. First—the traditional justification—that a strike by public employees is tantamount to a denial of governmental authority/sovereignty. Second, the terms of public employment are not subject to bilateral collective bargaining, as in the private sector, because they are set by the legislative body through unilateral lawmaking. Third, since legislative bodies are responsible for public employment decisionmaking, granting public employees the right to strike would afford them excessive bargaining leverage, resulting in a distortion of the political process and an improper delegation of legislative authority. Finally, public employees provide essential public services which, if interrupted by strikes, would threaten the public welfare.
Our determination of the legality of strikes by public employees necessarily involves an analysis of the reasoning and current viability of each of these arguments. The first of these justifications, the sovereignty argument, asserts that government is the embodiment of the people, and hence those entrusted to carry out its function may not impede it.19 This argument was [575]*575particularly popular in the first half of the 20th century, when it received support from several American Presidents.20
The sovereignty concept, however, has often been criticized in recent years as a vague and outdated theory based on the assumption that “the King can do no wrong. ” As Judge Harry T. Edwards has cogently observed, “the application of the strict sovereignty notion—that governmental power can never be opposed by employee organizations—is clearly a vestige from another era, an era of unexpanded government.... With the rapid growth of the government, both in sheer size as well as in terms of assuming services not traditionally associated with the ‘sovereign,’ government employees understandably no longer feel constrained by a notion that ‘The King can do no wrong.’ The distraught cries by public unions of disparate treatment merely reflect the fact that, for all intents and purposes, public employees occupy essentially the same position vis a vis the employer as their private counterparts. ” (Edwards, The Developing Labor Relations Law in the Public Sector (1972) 10 Duq. L.Rev. 357, 359-360.)21
In recent years, courts have rejected the very same concept of sovereignty as a justification for governmental immunity from tort liability. In California, the death knell came in Muskopf v. Coming Hospital Dist. (1961) 55 Cal.2d 211 [11 Cal.Rptr. 89, 359 P.2d 457], where this court stated that, [576]*576“[t]he rule of governmental immunity for tort is an anachronism, without rational basis, and has existed only by the force of inertia.” (55 Cal.2d at p. 216.) As noted by this court in Muskopf, perpetuation of the doctrine of sovereign immunity in tort law led to many inequities, and its application effected many incongruous results. Similarly, the use of this archaic concept to justify a per se prohibition against public employee strikes is inconsistent with modern social reality and should be hereafter laid to rest.
The second basic argument underlying the common law prohibition of public employee strikes holds that since the terms of public employment are fixed by the Legislature, public employers are virtually powerless to respond to strike pressure, or alternatively that allowing such strikes would result in “government by contract” instead of “government by law.” (See City of L.A. v. Los Angeles etc. Council (1949) 94 Cal.App.2d 36, 46 [210 P.2d 305].) This justification may have had some merit before the California Legislature gave extensive bargaining rights to public employees. However, at present, most terms and conditions of public employment are arrived at through collective bargaining under such statutes as the MMBA.
We have already seen that the MMBA establishes a variety of rights and protections for public employees—including the right to join and participate in union activities and to meet and confer with employer representatives for the purpose of resolving disputed labor-management issues. The importance of mandating these rights, particularly the meet and confer requirement, cannot be ignored. The overall framework of the MMBA represents a nearly exact parallel to the private sector system of collective bargaining—a system which sets forth the guidelines for labor-management relations in the private sphere and which protects the right of private employees to strike. By enacting these significant and parallel protections for public employees through the MMBA, the Legislature effectively removed many of the underpinnings of the common law per se ban against public employee strikes. While the MMBA does not directly address the issue of such strikes, its implications regarding the traditional common law prohibition are significant.
This argument was eloquently explained by Justice Grodin in his concurring opinion in El Rancho Unified Sch. Dist. v. National Education Assn., supra, 33 Cal.3d at page 963, where he pointed out that “[t]he premise underlying the court’s opinion in City of L.A. [94 Cal.App.2d 36]—that it is necessarily contrary to public policy to establish terms and conditions of employment for public employees through the bilateral process of collective bargaining rather than through unilateral lawmaking—has since been rejected by the Legislature. The heart of the statute under consideration in [577]*577this case [the Educational Employment Relations Act], for example, contemplates that matters relating to wages, hours, and certain other terms and conditions of employment for teachers will be the subject of negotiation and agreement between a public school employer and organizations representing its employees. (Gov. Code, §§ 3543.2, 3543.3, 3543.7.) Thus, the original policy foundation for the ‘rule’ that public employee strikes are illegal in this state has been substantially undermined, if not obliterated.”
The remaining two arguments have not served in this state as grounds for asserting a ban on public employee strikes but have been advanced by commentators and by courts of other states. With the traditional reasons for prohibiting such strikes debunked, these additional reasons do not convince us of the necessity of a judicial ukase prohibiting all such strikes.
The first of these arguments draws upon the different roles of market forces in the private and public spheres. This rationale suggests that because government services are essential and demand is generally inelastic, public employees would wield excessive bargaining power if allowed to strike. Proponents of this argument assume that economic constraints are not present to any meaningful degree in the public sector. Consequently, in the absence of such constraints, public employers will be forced to make abnormally large concessions to workers, which in turn will distort our political process by forcing either higher taxes or a redistribution of resources between government services.22
There are, however, several fundamental problems with this “distortion of the political process” argument. For one, as will be discussed more fully below, a key assumption underlying the argument—that all government services are essential—is factually unsupportable. Modem governments engage in an enormous number and variety of functions, which clearly vary as to their degree of essentiality. As such, the absence of an unavoidable nexus between most public services and essentiality necessarily undercuts the notion that public officials will be forced to settle strikes quickly and at any [578]*578cost. The recent case of the air-traffic controllers’ strike23 is yet another example that governments have the ability to hold firm against a strike for a considerable period, even in the face of substantial inconvenience. As this court concluded in Los Angeles Met. Transit Authority v. Brotherhood of Railroad Trainmen, supra, “Permitting employees to strike does not delegate to them authority to fix their own wages to the exclusion of the employer’s discretion. In collective bargaining negotiations, whether or not the employees strike, the employer is free to reject demands if he determines that they are unacceptable.” (54 Cal.2d at p. 693, italics added.)
Other factors also serve to temper the potential bargaining power of striking public employees and thus enable public officials to resist excessive demands: First, wages lost due to strikes are as important to public employees as they are to private employees. Second, the public’s concern over increasing tax rates will serve to prevent the decisionmaking process from being dominated by political instead of economic considerations. A third and related economic constraint arises in such areas as water, sewage and, in some instances, sanitation services, where explicit prices are charged. Even if representatives of groups other than employees and the employer do not formally enter the bargaining process, both union and local government representatives are aware of the economic implications of bargaining which leads to higher prices which are clearly visible to the public. A fourth economic constraint on public employees exists in those services where subcontracting to the private sector is a realistic alternative. For example, Warren, Michigan resolved a bargaining impasse with an American Federation of State, County and Municipal Employees (AFSCME) local by subcontracting its entire sanitation service; Santa Monica, California, ended a strike of city employees by threatening to subcontract its sanitation operations; in fact, San Francisco has chosen to subcontract its entire sanitation system to private firms. If this subcontract option is preserved, wages in the public sector clearly need not exceed the rate at which subcontracting becomes a realistic alternative.24
[579]*579The proponents of a flat ban on public employee strikes not only ignore such factors as the availability of subcontracting, but also fail to adequately consider public sentiment towards most strikes and assume that the public will push blindly for an early resolution at any cost. In fact, public sentiment toward a strike often limits the pressure felt by political leaders, thereby reducing the strike’s effectiveness. A Pennsylvania Governor’s Commission Report stressed just such public sentiment as an important reason to grant a limited right to strike: “[T]he limitations on the right to strike which we propose . . . will appeal to the general public as so much fairer than a general ban on strikes that the public will be less likely to tolerate strikes beyond these boundaries. Strikes can only be effective so long as they have public support. In short, we look upon the limited and carefully defined right to strike as a safety valve that will in fact prevent strikes.”25 (Italics in original.)
In sum, there is little, if any empirical evidence which demonstrates that governments generally capitulate to unreasonable demands by public employees in order to resolve strikes. The result of the strike in the instant case clearly suggests the opposite. During the 11-day strike, negotiations resumed, and the parties subsequently reached an agreement on a new MOU, the terms of which were precisely the same as the District’s last offer prior to the commencement of the strike. Such results certainly do not illustrate a situation where public employees wielded excessive bargaining power and thereby caused a distortion of our political process.
The fourth and final justification for the common law prohibition is that interruption of government services is unacceptable because they are essential. As noted above, in our contemporary industrial society the presumption of essentiality of most government services is questionable at best. In addition, we tolerate strikes by private employees in many of the same areas in which government is engaged, such as transportation, health, education, and utilities; in many employment fields, public and private activity largely overlap.
In a dissenting opinion in Anderson Fed. of Teach, v. School City of Anderson, supra, Chief Justice DeBruler of Indiana observed that the source and management of most service enterprises is irrelevant to the relative essentiality of the services: “There is no difference in impact on the community between a strike by employees of a public utility and employees of [580]*580a private utility; nor between employees of a municipal bus company and a privately owned bus company; nor between public school teachers and parochial school teachers. The form of ownership and management of the enterprise does not determine the amount of destruction caused by a strike of the employees of that enterprise. In addition, the form of ownership that is actually employed is often a political and historical accident, subject to future change by political forces. Services that were once rendered by public enterprise may be contracted out to private enterprise, and then by another administration returned to the public sector.” (251 N.E.2d at p. 21.)
Recently, the United States Supreme Court also eschewed the classic equation of public ownership of an industry with the essentiality of that industry. In an earlier case which reflected the traditional reasoning, United States v. Mineworkers (1947) 330 U.S. 258 [91 L.Ed. 884, 67 S.Ct. 677], the Supreme Court had held that the government’s wartime seizure of private coal mines rendered those mining operations public services and changed the rights of the miners, though the function of the mines remained exactly the same. The court then approved the issuance of an injunction against striking workers, a remedy that would not have been available had the mines still been considered a private enterprise.
In the recent case of Transportation Union v. Long Island R. Co. (1982) 455 U.S. 678 [71 L.Ed.2d 547, 102 S.Ct. 1349], however, the court held that employees of a formerly private railroad, which had recently been acquired by a governmental entity, retained their right to strike under the Railway Labor Act. In this latter instance, the Supreme Court clearly recognized that the public takeover of the railroad did not necessarily change the rights of the employees; the court therefore suggested that the railroad became no more essential after its public acquisition. Although the decision’s basis in the supremacy clause limits its direct precedential value on labor law, the ruling nevertheless signifies a major departure from the court’s earlier holding in Mineworkers, supra—that a service becomes essential once it comes under government control. The Transportation Union case thus underscores the conclusion that it is the nature of the service provided which determines its essentiality and the impact of its disruption on the public welfare, as opposed to a simplistic determination of whether the service is provided by public or private employees. Indeed, strikes by private workers often pose a more serious threat to the public interest than would many of those which involve public employees.
We of course recognize that there are certain “essential” public services, the disruption of which would seriously threaten the public health or safety. In fact, defendant union itself concedes that the law should still act to render [581]*581illegal any strikes in truly essential services which would constitute a genuine threat to the public welfare. Therefore, to the extent that the “excessive bargaining power” and “interruption of essential services” arguments still have merit, specific health and safety limitations on the right to strike should suffice to answer the concerns underlying those arguments.
In addition to the various legal arguments advanced to persuade the courts to impose a judicial ban on public employee strikes—arguments which, as we have seen, are decidedly unpersuasive in the context of modern jurisprudence and experience—there is the broader concern that permitting public employees to strike may be, on balance, harmful to labor-management relations in the public sector. This is essentially a political argument, best addressed to the Legislature. We review the matter only to point out that the issue is not so clear cut as to justify judicial intervention, since the Legislature could reasonably conclude that recognizing public employees’ right to strike may actually enhance labor-management relations.
At least 11 states have granted most of their public employees a right to strike;26 and the policy rationale behind this statutory recognition further undercuts several of the basic premises relied upon by strike-ban advocates. As the aforementioned Pennsylvania Governor’s Commission Report concluded: “The collective bargaining process will be strengthened if this qualified right to strike is recognized. It will be some curb on the possible intransigence of an employer; and the limitations on the right to strike will serve notice on the employee that there are limits to the hardships that he can impose.” (251 Gov. Empl. Rel. Rep., supra, at p. E-3.)
It is unrealistic to assume that disputes among public employees and their employers will not occur; in fact, strikes by public employees are relatively frequent events in California. For example, 46 strikes occurred during 1981-1983, which actually marks a significant decline when compared to the number during the 5 previous years.27 Although the circumstances be[582]*582hind each individual strike may vary somewhat, commentators repeatedly note that much of the reason for their occurrence lies in the fact that without the right to strike, or at least a credible strike threat, public employees have little negotiating strength. This, in turn, produces frustrations which exacerbate labor-management conflicts and often provoke “illegal” strikes.
The noted labor mediator, Theodore W. Kheel, aptly described this process when analyzing New York’s Taylor Law (which makes all public employee strikes illegal) and its resultant effect on labor relations in that state: “It would be unfair to place upon the legal machinery sole responsibility for these interruptions of critical services on which the welfare of New York depends. But the fact remains that the machinery—including the prohibition on strikes with attendant penalties and the fact-finding boards with their power to make recommendations—did not work to settle these disputes or stop the strikes, slowdowns, or threats. In fact it is probable that the Taylor Law exacerbated these conflicts. For one thing, it made subversive a form of conduct society endorsed for private workers. It encouraged unions to threaten to strike to achieve the bargaining position participants in collective bargaining must possess. It made the march to jail a martyr’s procession and a badge of honor for union leaders. ... In simple point of fact, it did not and is not likely to work as a mechanism for resolving conflicts in public employment relations through joint determination, whether called collective bargaining or collective negotiations.” (Kheel, Strikes and Public Employment, supra, 67 Mich.L.Rev. 931, 936.)28
[583]*583It is universally recognized that in the private sector, the bilateral determination of wages and working conditions through a collective bargaining process, in which both sides possess relatively equal strength, facilitates understanding and more harmonious relations between employers and their employees. In the absence of some means of equalizing the parties’ respective bargaining positions, such as a credible strike threat, both sides are less likely to bargain in good faith;29 this in turn leads to unsatisfactory and acrimonious labor relations and ironically to more and longer strikes. Equally as important, the possibility of a strike often provides the best impetus for parties to reach an agreement at the bargaining table, because both parties lose if a strike actually comes to pass. Thus by providing a clear incentive for resolving disputes, a credible strike threat may serve to avert, rather than to encourage, work stoppages.
Theodore Kheel has explained this argument very well: “[W]e should acknowledge the failure of unilateral determination, and turn instead to true collective bargaining, even though this must include the possibility of a strike. We would then clearly understand that we must seek to improve the bargaining process and the skill of the negotiators to prevent strikes. . . . With skillful and responsible negotiators, no machinery, no outsiders, and no fixed rules are needed to settle disputes. For too long our attention has been directed to the mechanics and penalties rather than to the participants in the process. It is now time to change that, to seek to prevent strikes by encouraging collective bargaining to the fullest extent possible.”30
A final policy consideration in our analysis addresses a more philosophical issue—the perception that the right to strike, in the public sector as well as in the private sector, represents a basic civil liberty.31 The widespread ac[584]*584ceptance of that perception leads logically to the conclusion that the right to strike, as an important symbol of a free society, should not be denied unless such a strike would substantially injure paramount interests of the larger community.
Plaintiff’s argument that only the Legislature can reject the common law doctrine prohibiting public employee strikes flies squarely in the face of both logic and past precedent. Legislative silence is not the equivalent of positive legislation and does not preclude judicial reevaluation of common law doctrine. If the courts have created a bad rule or an outmoded one, the courts can change it.
This court has long recognized the need to redefine, modify or even abolish a common law rule “when reason or equity demand it” or when its underlying principles are no longer justifiable in light of modern society. (See Rodriguez v. Bethlehem Steel Corp. (1974) 12 Cal.3d 382, 394 [115 Cal.Rptr. 765, 525 P.2d 669]; Muskopf v. Corning Hospital Dist. (1961) 55 Cal.2d 211, 216 [11 Cal.Rptr. 89, 359 P.2d 457]; Green v. Superior Court (1974) 10 Cal.3d 616, 629 [111 Cal.Rptr. 704, 517 P.2d 1168]; Li v. Yellow Cab Co. (1975) 13 Cal.3d 804, 808 [119 Cal.Rptr. 858, 532 P.2d 1226, 78 A.L.R.3d 393].)
This court’s history provides numerous examples of this principle. In Li v. Yellow Cab Co., supra, 13 Cal.3d at page 812, when this court first adopted a rule of comparative negligence, we expressly rejected the contention that any change in the law of contributory negligence was exclusively a matter for the Legislature, and overturned more than a century of precedent. In Rodriguez v. Bethlehem Steel Corp., supra, 12 Cal.3d 382, we directly repudiated the assertion that recognition of a spousal action for loss of consortium required legislative action (see pp. 393-395) and reversed numerous prior decisions in endorsing that cause of action. Furthermore, “[w]hen the law governing á subject has been shaped and giiided by judicial decision, legislative inaction does not necessarily constitute a tacit endorsement of the precise stage in the evolution of the law extant at the time when the Legislature did nothing; it may signify that the Legislature is willing to entrust the further evolution of legal doctrine to judicial development.” [585]*585(People v. Drew (1978) 22 Cal.3d 333, 347, fn. 11 [149 Cal.Rptr. 275, 583 P.2d 1318].)
For the reasons stated above, we conclude that the common law prohibition against public sector strikes should not be recognized in this state. Consequently, strikes by public sector employees in this state as such are neither illegal nor tortious under California common law. We must immediately caution, however, that the right of public employees to strike is by no means unlimited. Prudence and concern for the general public welfare require certain restrictions.
The Legislature has already prohibited strikes by firefighters under any circumstance. It may conclude that other categories of public employees perform such essential services that a strike would invariably result in imminent danger to public health and safety, and must therefore be prohibited.32
While the Legislature may enact such specific restrictions, the courts must proceed on a case-by-case basis. Certain existing statutory standards may properly guide them in this task. As noted above, a number of states have granted public employees a limited right to strike, and such legislation typically prohibits strikes by a limited number of employees involved in clearly essential services. In addition, several statutes provide for injunctive relief against other types of striking public employees when the state clearly demonstrates that the continuation of such strikes will constitute an imminent threat or “clear and present danger” to public health and safety.33 Such an [586]*586approach guarantees that essential public services will not be disrupted so as to genuinely threaten public health and safety, while also preserving the basic rights of public employees.
After consideration of the various alternatives before us, we believe the following standard may properly guide courts in the resolution of future disputes in this area: strikes by public employees are not unlawful at common law unless or until it is clearly demonstrated that such a strike creates a substantial and imminent threat to the health or safety of the public. This standard allows exceptions in certain essential areas of public employment (e.g., the prohibition against firefighters and law enforcement personnel) and also requires the courts to determine on a case-by-case basis whether the public interest overrides the basic right to strike.
Although we recognize that this balancing process may impose an additional burden on the judiciary, it is neither a novel nor unmanageable task.34 Indeed, an examination of the strike in the instant case affords a good example of how this new standard should be applied. The 11-day strike did not involve public employees, such as firefighters or law enforcement per[587]*587sonnel, whose absence from their duties would clearly endanger the public health and safety. Moreover, there was no showing by the District that the health and safety of the public was at any time imminently threatened. That is not to say that had the strike continued indefinitely, or had the availability of replacement personnel been insufficient to maintain a reasonable sanitation system, there could not have been at some point a clear showing of a substantial threat to the public health and welfare.35 However, such was not the case here, and the legality of the strike would have been upheld under our newly adopted standard.36
Defendant union has also urged this court to find that a per se prohibition of all public employee strikes violates the California Constitution’s guarantees of freedom of association, free speech, and equal protection. They do not contend that such a constitutional infringement is present when a court exercises its equitable authority to enjoin a strike based on a showing that the strike represents a substantial and imminent danger to the public health or safety. Instead, the union argues that in the absence of such a showing, per se prohibition is constitutionally unsupportable.
The right to form and be represented by unions is a fundamental right of American workers that has been extended to public employees through constitutional adjudication37 as well as by statute; in this case, it is [588]*588specifically mandated by the provisions of the MMBA itself. In addition, “ ‘[i]t is now settled law that workmen may lawfully combine to exert various forms of economic pressure upon an employer, provided the object sought to be accomplished thereby has a reasonable relation to the betterment of labor conditions, and they act peaceably and honestly. (Citations) This right is guaranteed by the federal Constitution as an incident of freedom of speech, press and assemblage, (citations) and it is not dependent upon the existence of a labor controversy between the employer and his employee.’ ” (In re Blaney (1947) 30 Cal.2d 643, 648 [184 P.2d 892], quoting Steiner v. Long Beach Local No. 128 (1942) 19 Cal.2d 676, 682 [123 P.2d 20].)
As the union contends, however, the right to unionize means little unless it is accorded some degree of protection regarding its principal aim—effective collective bargaining. For such bargaining to be meaningful, employee groups must maintain the ability to apply pressure or at least threaten its application. A creditable right to strike is one means of doing so. As yet, however, the right to strike has not been accorded full constitutional protection, the prevailing view being that “[t]he right to strike, because of its more serious impact upon the public interest, is more vulnerable to regulation than the right to organize and select representatives for lawful purposes of collective bargaining which this Court has characterized as a ‘fundamental right. . . .’ ” (Auto. Workers v. Wis. Board (1949) 336 U.S. 245, 259 [93 L.Ed. 651, 666, 69 S.Ct. 516].)
Further, the federal ban on public employee strikes has been specifically upheld as constitutionally permissible. (See United Federation of Postal Clerks v. Blount, supra, 325 F.Supp. 879, 884; affd. (1971) 404 U.S. 802 [589]*589[30 L.Ed.2d 38, 92 S.Ct. 80].) In the absence of any explicit constitutional protection of the right to strike, the Blount court reasoned that the law prohibiting only public employees from striking need only have a rational basis to avoid offending constitutional guarantees. The court then easily found that the common law policy justifications (discussed in detail above) did indeed provide a rational basis for the per se prohibition. (See, United Federation of Postal Clerks v. Blount, supra, at p. 883.)
Thoughtful judges and commentators, however, have questioned the wisdom of upholding a per se prohibition of public employee strikes. They have persuasively argued that because the right to strike is so inextricably intertwined with the recognized fundamental right to organize and collectively bargain, some degree of constitutional protection should be extended to the act of striking in both the public and private sectors.
As Judge J. Skelly Wright declared in his concurrence in United Federation of Postal Clerks v. Blount, supra, “[i]f the inherent purpose of a labor organization is to bring the workers’ interests to bear on management, the right to strike is, historically and practically, an important means of effectuating that purpose. A union that never strikes, or which can make no credible threat to strike, may wither away in ineffectiveness. That fact is not irrelevant to the constitutional calculations. Indeed, in several decisions, the Supreme Court has held that the First Amendment right of association is at least concerned with essential organizational activities which give the particular association life and promote its fundamental purposes. . . . [Citations.] I do not suggest that the right to strike is co-equal with the right to form labor organizations. . . . But I do believe that the right to strike is, at least, within constitutional concern and should not be discriminatorily abridged without substantial or ‘compelling’ justification.” (325 F.Supp. 879, 885.)
Chief Justice Roberts of the Rhode Island Supreme Court offered similar sentiments in a case involving a teachers’ strike in that state: “Obviously, the right to strike is essential to the viability of a labor union, and a union which can make no credible threat of strike cannot survive the pressures in the present-day industrial world. If the right to strike is fundamental to the existence of a labor union, that right must be subsumed in the right to organize and bargain collectively. . . . The collective bargaining process, if it does not include a constitutionally protected right to strike, would be little more than an exercise in sterile ritualism. ... I cannot agree that every strike by public employees necessarily threatens the public welfare and governmental paralysis. . . . The fact is that in many instances strikes by private employees pose the far more serious threat to the public interest [590]*590than would many of those engaged in by public employees. ... In short, it appears to me that to deny all public employees the right to strike because they are employed in the public sector would be arbitrary and unreasonable.” (School Committee v. Westerly Teachers Ass’n (1973) Ill R.I. 96 [299 A.2d 441, 447-449], dis. opn.)
We are not persuaded that the personal freedoms guaranteed by the United States and California Constitutions confer an absolute right to strike,38 but the arguments above may merit consideration at some future date. If the right to strike is afforded some constitutional protection as derivative of the fundamental right of freedom of association, then this right cannot be abridged absent a substantial or compelling justification.
As this court stated in Vogel v. County of Los Angeles (1967) 68 Cal.2d 18, 22 [64 Cal.Rptr. 409, 434 P.2d 961], which invalidated a loyalty oath requirement for public employees in this state, “even where a compelling state purpose is present, restrictions on the cherished freedom of association protected by the First Amendment and made applicable to the states by the Fourteenth Amendment must be drawn with narrow specificity. First Amendment freedoms are delicate and vulnerable and must be protected wherever possible. When government seeks to limit those freedoms on the basis of legitimate and substantial governmental purposes . . . those purposes cannot be pursued by means that broadly stifle fundamental personal liberties when the end can be more narrowly achieved. Precision of regulation is required so that the exercise of our most precious freedoms will not be unduly curtailed except to the extent necessitated by the legitimate governmental objective. (Keyishian v. Board of Regents, supra, 385 U.S. 589, 602-603; Elfbrandt v. Russell, 384 U.S. 11, 15, et seq.; N.A.A.C.P. v. Button, 371 U.S. 415, 432-433; Shelton v. Tucker, 364 U.S. 479, 488; Bagley v. Washington Township Hospital Dist., supra, 65 Cal.2d 499, 506-509; Fort v. Civil Service Com., supra, 61 Cal.2d 331, 337-338.)”
As discussed at length above, the traditional justifications espoused in favor of a per se prohibition cannot withstand a significant degree of judicial scrutiny. Indeed, since not all public employee services are essential and many private employees perform services more vital to the public health [591]*591and safety than do their counterparts in the public sector, the simplistic public/private dichotomy does not constitute a “compelling” justification for a per se prohibition of public employee strikes. Thus the constitutional arguments of defendant union and several amici cannot easily be dismissed, particularly since we will retain the limitation that public strikes may be prohibited when they threaten the public health or safety.39
Since we have already concluded that the traditional per se prohibition against public employee strikes can no longer be upheld on common law grounds, we do not find it necessary to reach the issue in constitutional terms. Although we are not inclined to hold that the right to strike rises to the magnitude of a fundamental right, it does appear that associational rights are implicated to a substantial degree. As such, the close connection between striking and other constitutionally protected activity adds further weight to our rejection of the traditional common law rationales underlying the per se prohibition. (Cf. Environmental Planning & Information Council [592]*592v. Superior Court (1984) 36 Cal.3d 188, 195 [203 Cal.Rptr. 127, 680 P.2d 1086].)
We conclude that it is not unlawful for public employees to engage in a concerted work stoppage for the purpose of improving their wages or conditions of employment, unless it has been determined that the work stoppage poses an imminent threat to public health or safety. Since the trial court’s judgment for damage in this case was predicated upon an erroneous determination that defendants’ strike was unlawful, the judgment for damages cannot be sustained.40
The judgment is reversed.
Mosk, J., and Grodin, J., concurred.