CANE, J.
The primary issue on appeal is whether the mediation-arbitration provisions of the Municipal Employment Relations Act, sec. 111.70(4) (cm), Stats., is a constitutional delegation of authority. Because we conclude it is, we affirm.
Milwaukee County and Milwaukee District Council 48 (Council) attempted to negotiate a collective bargaining agreement for 1981 and subsequent years. During these negotiations, the Council petitioned the Wisconsin Employment Relations Commission (WERC) for mediation-arbitration pursuant to the Municipal Employment Relations Act (MERA), sec. 111.70, Stats.
A mediator was
appointed pursuant to MERA to determine whether an impasse in negotiations required the appointment of a mediator-arbitrator.
Milwaukee County then filed an action in circuit court for a temporary injunction declaring sec. 111.70(4) (cm)
unconstitutional because it illegally delegates legislative authority. The court denied the request for a temporary injunction, and both sides moved for summary judgment. The circuit court granted the Council’s motion for summary judgment declaring sec. 111.70(4) (cm) constitutional, and, as applied, a lawful delegation of authority. Because of the statewide importance of this issue, we accepted amicus curiae briefs from the Wisconsin County Board’s Association, the League of Wisconsin Municipalities, and intervention by other captioned organizations.
STANDING TO CHALLENGE
One issue raised is whether Milwaukee County has standing to challenge the constitutionality of MERA. The general rule is that a state agency or municipality cannot challenge the constitutionality of a statute.
City of Madison v. Ayres,
85 Wis. 2d 540, 544, 271 N.W.2d 101, 103 (1978). Because the state has created counties as agencies exercising those governmental powers entrusted to them, the right of a county to challenge legislative acts is also restricted.
Brown County v. Department of Health & Social Services,
103 Wis. 2d 37, 43, 307 N.W.2d 247, 250 (1981). This general rule, however, is subject to two exceptions:
(1) If it is the agency’s official duty to appeal, or the agency will be affected if it fails to do so and the statute is held invalid;
State ex rel. City of La Crosse v. Rothwell, 25
Wis. 2d 228, 233, 130 N.W.2d 806, 808-09 (1964). This exception applies only to cases between private litigants and a municipality or state agency,
County of Dane v. Wisconsin Dep’t of Health & Soc. Serv.,
79 Wis. 2d 323, 331, 255 N.W.2d 539, 544 (1977); and
(2) If the issue is of great public concern;
Rothwell,
at 233, 130 N.W.2d at 809.
Both exceptions apply in this case. This is a dispute between a municipality, Milwaukee County, and private litigants, Milwaukee District Council 48. Also, the county will be affected if MERA is held invalid. Finally, MERA was enacted in response to the controversial public employee strikes throughout Wisconsin, and the statute affects the entire nature of negotiations between municipalities and their employees. Both sides therefore agree that the statutory procedure for binding arbitration is an issue of great public concern.
It is also argued that Milwaukee County is estopped from challenging the statute because it participated in arbitration and enjoyed the statutory benefits of the statute. One may not retain the benefits of a statute and subsequently attack its constitutionality.
State v. Keehn,
74 Wis. 2d 218, 222, 246 N.W.2d 547, 549 (1977). Here, however, Milwaukee County did initially challenge MERA before the circuit court; it participated in the arbitration only after the circuit court ordered it to do so. This is not a situation where the county employed the statute to determine the arbitration results and then attacked its constitutionality. Accordingly, the principle of estoppel does not apply to defeat Milwaukee County’s constitutional challenge.
CONSTITUTIONALITY OF MERA
The central issue is the constitutionality of MERA. Milwaukee County contends that MERA is an unconstitutional delegation of legislative authority for three reasons.
First, Milwaukee County contends article IV, section 22, of the Wisconsin Constitution requires that a delegation by the legislature of local and legislative matters affecting counties must be made to the county board of supervisors.
It argues that arbitrators’ decisions under the statute are legislative in nature. Support for this argument has been recognized in a case involving the constitutionality of Utah’s Fire Fighters Negotiation Act, which provided for an arbitration panel. The Utah court concluded that because the panel’s decision affects the
allocation of public resources, the level of public services provided, the costs of government, and consequently may necessitate an increase in taxes, such decisions are legislative-political.
Salt Lake City v. International Ass’n of Firefighters, Locals 1645, 593, 1654, and 2064,
563 P.2d 786 (Utah 1977). A similar result was reached in
Dearborn Fire Fighters Union, Local No. 412 v. City of Dearborn,
231 N.W.2d 226 (Mich. 1975). Although an arbitrator acting under the statutes in this case does not have authority to levy taxes, Milwaukee County reasons that the practical effect of the arbitrator’s decision may force Milwaukee County to increase its taxes, which would imply that the arbitrator’s decision was legislative-political.
Second, Milwaukee County contends the statute is unconstitutional because the arbitrator is not accountable to the electorate. Milwaukee County supports this contention by again citing
Dearborn, Salt Lake City,
and
Town of Berlin v. Santiguida,
98 LRRM 3259 (Conn. Super. Ct. 1978), which held that officials engaged in governmental decision-making, e.g., setting budgets, salaries, and other terms and conditions of public employment, must be accountable to the citizens they represent. These cases conclude that binding arbitration removes such decisions from the elected officials and unlawfully places them in the hands of an outsider who has no accountability to the public. Milwaukee County urges us to adopt the same rationale and declare the statute unconstitutional.
Finally, Milwaukee County contends that the statute is unconstitutional because it does not provide adequate procedural and judicial safeguards. Milwaukee County argues that MERA makes no provision for meaningful judicial review, and that even the limited judicial review opportunities found in ch. 788, Stats., are expressly prohibited by sec. 111.70 (4) (cm) 8.
In determining the validity of Milwaukee County’s constitutional challenge, we are mindful of the established principle that a strong presumption of constitutionality attaches to all legislative acts. One attacking a statute’s validity has the burden of demonstrating its unconstitutionality beyond a reasonable doubt. Every presumption must be indulged to sustain the law if possible, and all doubts must be resolved in favor of constitutionality.
Modern v. McGinnis,
70 Wis. 2d 1056, 1072, 236 N.W.2d 240, 246 (1975);
Jenks v. DILHR,
107 Wis. 2d 714, 723, 321 N.W.2d 347, 352 (Ct. App. 1982).
Our supreme court has determined that a delegation of authority will be upheld if three tests are satisfied:
(1) The legislative purpose is ascertainable.
Watchmaking Examining Bd. v. Husar,
49 Wis. 2d 526, 534-36, 182 N.W.2d 257, 262 (1971);
(2) There are sufficient standards to limit the exercise of such power.
Wisconsin Solid Waste Recycling Authority v. Earl,
70 Wis. 2d 464, 235 N.W.2d 648, 666 (1975);
(3) There are procedural and judicial safeguards.
Westring v. James,
71 Wis. 2d 462, 468, 238 N.W.2d 695, 698 (1976).
Legislative Purpose
The legislative purpose is set forth in sec. 111.70(6), Stats.
The public policy of the state as to labor disputes arising in municipal employment is to encourage voluntary settlement through the procedures of collective bargaining. Accordingly, it is in the public interest that municipal employees so desiring be given an opportunity to bargain collectively with the municipal employer through a labor organization or other representative of the employes’ own choice.
If such procedures fail, the parties should have available to them a fair, speedy, effective
and, above all, peaceful procedure for settlement as provided in this subchapter.
[Emphasis supplied.]
The purpose is clearly ascertainable from the statute.
Standards
The statute also provides specific standards in sec. 111.70(4) (cm) 7 to guide the arbitrators. Substantially similar standards in secs. 111.57 (3) and 111.58, Stats., governing arbitration disputes between public utilities and their employees, were upheld against an attack of unconstitutional delegation in
United Gas, Coke & Chemical Workers, Local 18 v. WERB,
255 Wis. 154, 38 N.W. 2d 692 (1949). We conclude that the criteria set forth in sec. 111.70(4) (cm) 7 are sufficient standards to limit the exercise of arbitrator’s power.
Procedural Safeguards
Section 111.70(4) (cm) 6 prescribes specific procedural safeguards.
The WERC becomes directly involved upon
a petition for mediation-arbitration. It initially investigates and determines whether an actual impasse exists between the parties. The parties also select an impartial arbitrator in a process similar to drawing a jury, by alternatively striking names from a list provided by the WERC. Initially, the arbitrator must mediate and encourage settlement. Procedures are provided for public hearings and public input. Before proceeding to arbitration the arbitrator must give written notice of intent to resolve the dispute, at which time the parties are entitled to withdraw their final offer. Prior to issuing a decision, either party may request an open meeting where arguments are made in support of the final offers. Finally, the arbitrator is prohibited from making a separate and unsupported decision. Only one of the final offers from the parties may be adopted, in writing, without modification. Consequently, the Act affords each side extensive procedural safeguards to ensure that the legislative purpose is fulfilled.
Judicial Safeguards
At oral argument, Milwaukee County conceded the legislative purpose is ascertainable, there are sufficient standards to guide the arbitrators, and there are sufficient procedural safeguards. Milwaukee County, however, argues that because no provision is made for judicial review, the arbitration statute must fail the third test for determining a constitutional delegation of authority. We do not agree. Judicial review of arbitration awards has traditionally been very limited.
Milwaukee Professional Firefighters Local 215 v. City of Milwaukee,
78 Wis. 2d 1, 21-22, 253 N.W.2d 481, 491 (1977). This limitation is necessary to preserve the important principle of finality in labor arbitration. In addition, although the legislature foreclosed judicial review under ch. 788, it did not absolutely forbid such review.
The statutory scheme makes it a prohibited practice for a municipal employer or employee to refuse or otherwise fail to implement an arbitration decision lawfully made.
See
secs. 111.70(3) (a)7 and 111.70(3) (b)6, Stats.
It also authorizes the WERC to adopt rules for the conduct of proceedings to enforce arbitration decisions. Section 111.70(4) (cm) 8, Stats.
The WERC, under its rule-making authority, has adopted procedures for the prevailing party to file a prohibited practice complaint and thereby obtain enforcement of the arbitrator’s award. Wis. Admin. Code, §§ ERB 31.18 and 31.19 (1978).
When presented with
a prohibited practice complaint, the WERC determines whether the award was lawfully made. Thus, a party
obtains an initial review by the WERC. When the WERC determines that the arbitration decision was lawfully made, it enters an order enforcing the award. Should the party decide not to comply with the WERC’s order, the WERC may petition the circuit court for enforcement.
See
secs. 111.70(4) (a) and 111.07(7), Stats. Judicial review is available at this stage.
The model for this statutory procedure is found in the National Labor Relations Act, 29 U.S.C.A. §§ 160(e) and (f) (West 1973). Both procedures permit a party to test the legality of the arbitration decision by refusing to recognize or implement the agency’s determination. In each case, agency review will automatically occur, followed by the possibility of judicial review.
In addition, the legislature, under sec. 227.06, Stats., permits either party to petition the WERC for a declaratory ruling on the legality of the arbitration award. The parties are afforded a full opportunity for a hearing. The WERC’s declaratory ruling is then subject to judicial review by the circuit court. Section 227.06 (1), Stats.
By requiring initial WERC review of the arbitration award, the legislature has provided for some measure of uniformity. Under ch. 788, judicial review of arbitration awards would be sought in the county in which the award was made without benefit of the WERC’s review. The legislature obviously preferred initial WERC review to assure some measure of expertise and to permit the court to benefit from this expertise. This process also comports with the tradition of limited court review in order to assure that arbitration proceedings remain rel
atively inexpensive and speedy, and to assure a degree of finality.
Thus, the legislature has provided not one, but two methods of judicial review. Additionally, the legislature has insured that legally inadequate arbitration awards can be set aside by directing the reviewing court to apply the statutory standards
de novo.
Section 111.07 (7), Stats. We conclude there are adequate judicial safeguards.
POLITICAL ACCOUNTABILITY
Milwaukee County urges that we adopt a fourth test when reviewing the constitutionality of a legislative delegation of authority; namely, the person or group to whom the authority is delegated must be directly answerable to the electorate. Milwaukee County contends that the statute is invalid because it delegates authority to appointed private arbitrators who are not accountable to the electorate. It asserts that Milwaukee County officials, as elected representatives, must set the terms and conditions of employment for county employees because they can be held directly accountable to the public for their decisions.
It is not the role of this court to review the wisdom of legislative judgments. We review only the question of whether that body exceeds its constitutional authority. In this case, the legislature struggled with the difficult problem of arriving at a fair dispute resolution system for both the public employer and the public employees. It determined that the unilateral determination of employment matters by the employer gave little weight to the rights of employees. It also determined that the right to strike, a traditional employee right, posed too great a threat to the smooth operation of essential public services. It was in this context that the legislature
devised a system for binding arbitration through an impartial arbitrator.
The underlying premise of public employer-employee arbitration is that communities will forego the consequences of embittered economic warfare if there is a process to resolve disputes under fair and neutral principles. Consequently, the legislature must be allowed some flexibility in formulating a procedure to resolve the conflict between direct electoral accountability and the independence afforded through insulation from the political process.
The Minnesota Supreme Court, when confronted with a similar argument, concluded that:
[A] ccountability to the public is like delegation of power; both are a matter of degrees. Although the arbitrators are not directly accountable to the public for their decisions, various provisions ensure the competence and accountability of the arbitrators.
There is also a pragmatic reason for the legislature’s removal of the arbitrators from the immediate pressures of public opinion. The arbitrators’ position is inherently one of trust; the parties must feel confident that the panel will listen to their positions, weigh the evidence, consider the panel’s statutory obligations, and come to a reasonable decision. The legislature may well have believed that exposing the arbitrators to more direct public input would influence the panels and undermine the effort to prevent work stoppages.
City of Richfield v. Local No. 1215, International Ass’n of Fire Fighters,
276 N.W.2d 42, 47 (Minn. 1979).
The test must not be how one classifies arbitrators, but whether there are guarantees against an excessive or unrestrained exercise of their power. We conclude that the authority delegated a private arbitrator does not fail because it is conferred on a “private person,” if proper
safeguards are provided. In this case, the selected arbitrator must be impartial and must follow procedures based on statutory standards before reaching a decision. Our concern on constitutional review is whether the statutory scheme provides protection against arbitrariness in the exercise of delegated authority. Milwaukee County’s objections to the arbitration statute relate more to the wisdom of the legislature in adopting this procedure to settle public employer-employee disputes than to its constitutionality. To void the statute on the basis advocated by Milwaukee County would require us to improperly exercise a legislative policy decision. That is not our function on appellate review.
A delegation of authority designed to achieve a proper balance between direct political accountability and independence from the political process does not violate constitutional principles. Because MERA’s legislative purpose is ascertainable, because the statute provides sufficient standards to guide the arbitrators, and because adequate procedural and judicial safeguards exist, we conclude that the statute satisfies the necessary constitutional requirements.
STATUTORY CONFLICT
The amicus curiae have advanced the additional argument that article IV, section 22, of the Wisconsin Constitution requires local, legislative and administrative powers to be conferred upon the county board. The amici contend the legislature did that in sec. 59.15(2) (c), Stats., which provides:
The [county] board may provide, fix or change the salary or compensation of any . . . employe . . . and also establish the number of employes in any department or office . . . and may establish regulations of employment for any person paid from the county treasury ....
Because no exceptions are made relating to the arbitrator’s decisions under sec. 111.70(4) (cm), Milwaukee County argues any conflict must be resolved in favor of county board authority. Section 59.15 (4) states that in the event of any conflict between sec. 59.15 and any other statute, sec. 59.15 prevails.
A similar argument was raised and rejected in
Glendale Professional Policemen’s Ass’n v. City of Glendale,
83 Wis. 2d 90, 264 N.W.2d 594 (1978). The court stated that “sec. 111.70 . . . should be harmonized with other statutes whenever possible and that the provisions of sec. 111.70 can modify preexisting statutes. Specific contract provisions authorized by MERA must also be harmonized with the preexisting statutory scheme.”
Id.
at 103-04, 264 N.W.2d at 601. This is particularly difficult because sec. 111.70 does not contain a legislative resolution of statutory conflicts.
In Wisconsin, counties, as quasi-municipal corporations, have no inherent power to govern. The municipalities are created almost exclusively in view of the state’s policy at large for purposes of political organization and civil administration in matters of state concern.
Columbia County v. Board of Trustees, 17
Wis. 2d 310, 317, 116 N.W.2d 142, 146 (1961). Here, we conclude that ch. 59, which delegates powers to county boards, does not conflict with the arbitration statute. The legislative powers of the county are exercised subject to the results of an arbitration award. Although sec. 59.15(2) (c), Stats., provides that the county may fix or change the compensation of its employees, it does not expressly limit the county from entering into collective bargaining or binding arbitration agreements. In
Glendale,
the supreme court found no conflict between sec. 62.13(4) (a), Stats., vesting authority to a police chief to select subordinates, and the municipality’s duty to bargain for promotions
within the police department under sec. 111.70, Stats.
Milwaukee County’s authority to fix or change the compensation of its employees is not impaired when it is required to participate in binding arbitration. The municipalities’ authority was recognized by the legislature when it enacted MERA. Section 111.70(1) (d) states, in part :
In creating this subchapter the legislature recognizes that the public employer must exercise its powers and responsibilities to act for the government and good order of the municipality, its commercial benefit and the health, safety and welfare of the public to assure orderly operations and functions within its jurisdiction, subject to those rights secured to public employes by the constitutions of this state and of the United States and by this subchapter.
This same recognition is stated in the declaration of policy, which provides that it is in the public interest to allow municipal employees to bargain collectively and, if such procedures fail, to have a peaceful settlement procedure.
Even if we were to conclude there is such a conflict, we adopt the rationale in
Glendale
that the provisions of sec. 111.70 can modify preexisting statutes. This conclusion is based on the fact that sec. 111.70 was enacted (and recently reenacted under ch. 20, 1981 Wis. Laws, extending the statute to July 1, 1987) after ch. 59. The legislature is presumed to have acted with full knowledge of the preexisting statutes.
EQUAL PROTECTION AND DUE PROCESS
Another argument raised in the amicus curiae briefs is that MERA is unconstitutional because it violates the United States equal protection and due process clauses and article I, section 1, of the Wisconsin Constitution.
The amici argue that the constitutionally established right to cast an effective vote is substantially impaired when decision-making authority over significant policy matters is removed from elected officials and delegated to non-elected arbitrators. This argument essentially raises the same objections as Milwaukee County’s contention that the arbitrator’s decisions are legislative and therefore unconstitutional.
Similar arguments were raised and found unpersuasive in
Village of West Milwaukee v. VTAE Board,
51 Wis. 2d 356, 187 N.W.2d 387 (1971). Our supreme court concluded that a statute providing for appointive boards to operate vocational schools and levy taxes for their operation does not violate the United States equal protection or due process clauses, and article I, section 1, of the Wisconsin Constitution.
Both the United States Supreme Court in
Sailors v. Board of Education,
387 U.S. 105, 110 (1967), and the Wisconsin Supreme Court in
Village of West Milwaukee,
51 Wis. 2d at 384, 187 N.W.2d at 400, state that although the appointive boards have authority to levy taxes, they perform essentially administrative, and not legislative functions. The two courts noted that the appointive bodies do not perform legislative functions merely because they levy taxes or perform other administrative duties. Consequently, both courts upheld the authority of the appointive bodies against the due process and equal protection challenges.
Similarly, we conclude that the appointed arbitrator performs an administrative, rather than a legislative
function. The legislature has identified a public policy in resolving public employer-employee disputes and has adopted the administrative means to effectuate that policy. The arbitrator merely carries out a legislatively-outlined administrative function. Consequently, we conclude MERA does not violate the equal protection or the due process clauses of either the United States or Wisconsin Constitution. We therefore affirm the circuit court’s judgment holding that Municipal Employment Relations Act is a constitutional delegation of authority.
By the Court.
— Order affirmed.