Marshall, C.J.
The plaintiff, Dr. Francisco S. Pardo, a radiation oncologist, appeals from a jury verdict in favor of the defendants, The General Hospital Corporation and Partners Healthcare System, Inc. (collectively the hospital), his former employer, on claims that he was discriminated against on the basis of his sexual orientation and that the hospital retaliated against him when he complained about the discrimination. See G. L. c. 151B, § 4 (1), (4), and (4A). At issue is whether the [3]*3judge3 erred in (1) denying the plaintiff discovery of certain documents the hospital claimed were privileged under G. L. c. Ill, § 204, the medical peer review privilege4; (2) admitting in evidence certain documents that the plaintiff contends were inadmissible because they contained hearsay statements, and permitting testimony concerning them; and (3) instructing the jury on his retaliation claim. We transferred the case here on our own motion. For the reasons we discuss below, we affirm the judgment.
1. Background. We summarize the facts as the jury could have found them, see Mitchell v. Silverstein, 320 Mass. 524, 525 (1946), identifying conflicting evidence where relevant.
Briefly stated, the plaintiff alleged that his career was derailed after he revealed his homosexuality to Dr. Herman D. Suit, at all relevant times chief of the hospital’s department of radiation oncology (department). The hospital countered with evidence that Dr. Suit had supported the advancement of the plaintiff’s career after the disclosure, as well as evidence that the department in general and Dr. Suit in particular had a history of recruiting, employing, and supporting homosexual employees.5 [4]*4The hospital also proffered substantial evidence of the plaintiffs neglect in the performance of his duties and other substandard behavior. We describe the evidence in greater detail because it informs in particular our discussion of the medical peer review privilege.
In 1986 the plaintiff joined the department, beginning a three-year residency. Dividing his time between clinical and laboratory work, the plaintiff successfully completed his residency in 1989, receiving an award for excellence. Dr. Suit invited the plaintiff to remain on staff as a fellow for one year, during which time the plaintiff, with the support of Dr. Suit, received several competitive grants for research. In 1990, Dr. Suit recommended that the plaintiff join the medical staff of the department and be appointed an instructor at Harvard Medical School. Within two years the plaintiff had published several articles in academic publications. Dr. Suit agreed to increase the amount of clinical work undertaken by the plaintiff.
During his residency and fellowship years, the plaintiff did not disclose his sexual orientation to Dr. Suit or to other senior members of the hospital staff. In the spring of 1993, the plaintiff learned that his longtime partner was ill with acquired immune deficiency syndrome (AIDS). In October, 1993, the plaintiff informed Dr. Suit that he is “gay,” that his partner had AIDS, and that he might need to take some time off to care for his partner.
After this discussion, the plaintiff continued to advance in his career and Dr. Suit continued to support him. In the summer of 1994, Dr. Suit recommended the plaintiff for promotions at the hospital and at Harvard Medical School. Dr. Suit also recommended the plaintiff for further grant funding for his research.6 [5]*5The promotion at the hospital was approved, and the plaintiff received the funding for his research from the National Cancer Institute. Dr. Suit continued to provide the plaintiff with salary support and additional office space to facilitate his work.
Sometime thereafter difficulties arose between Dr. Suit and the plaintiff. The jury learned that, in January, 1995, Dr. Suit reprimanded the plaintiff for removing certain laboratory research data books from Dr. Suit’s laboratory7; he ordered the plaintiff not to enter the laboratory without his permission. In March, 1995, Dr. Suit informed the plaintiff that he was placing his academic promotion on hold.8 Shortly thereafter, Dr. Suit became concerned about the plaintiff’s clinical teaching and patient care activities for the reasons we next discuss.
In April, 1995, Dr. Alan Hartford, a medical resident in the department, submitted a five-page memorandum to Dr. Suit (Hartford memorandum), in which he detailed numerous incidents over the course of the preceding three months to the effect that the plaintiff had not provided adequate supervision and training of residents.9 After receiving the Hartford memorandum, Dr. Suit spoke with Dr. Allan Thornton, who took care of the plaintiff’s patients in his absence and who therefore interacted with some of the medical residents who worked with the plaintiff. In response, Dr. Thornton wrote a [6]*6detailed letter (Thornton letter) discussing various shortcomings of the plaintiff. Dr. Thornton noted numerous areas of concern including “[p]age availability,” describing the plaintiff as “difficult to reach either by page or telephone”; “[c]linic accessibility,” describing the plaintiff’s repeated unavailability at the department’s clinic, creating particular difficulties for new patients; the plaintiff’s repeated failure to comply with certain protocols, which Dr. Thornton described as “an embarrassment to our group,” which could “not continue”; “[rjecord keeping,” in which Dr. Thornton said he “rarely [found] any notation in the charts of [the plaintiff’s] patients by [the plaintiff] himself,” even though these were “extremely ill patients requiring careful monitoring”; and the plaintiff’s history of obtaining “inadequate and spurious” consents by patients, which, said Dr. Thornton, would negatively affect any “litigation.” Dr. Thornton also described with concern that patient care was “left to the resident” and that the plaintiff was “rarely in attendance” at departmental conferences.
In late May, 1995, Dr. Suit informed the plaintiff that he was removing him from teaching and supervising residents, and would cease assigning residents to the plaintiff effective July 1, 1995.10 Further reductions in the plaintiff’s privileges and responsibilities followed. Dr. Suit met with the executive committee of the department in late June, 1995.11 The committee concluded it would no longer commit to funding the plaintiff’s salary for his research beyond the next two years. In August, 1995, Dr. Suit removed the plaintiff from participating in an experimental radiation project because, as he testified, the plaintiff had failed to follow certain procedures concerning the use of an experimental machine to irradiate brain tumors.
On August 17, 1995, the plaintiff filed a complaint with the [7]*7Massachusetts Commission Against Discrimination (MCAD). The following month, a dispute arose in the department concerning the plaintiff’s choice of treatment for one of his patients. While the plaintiff was on vacation, Dr. Suit and the department’s clinical director changed the treatment plan ordered by the plaintiff. The clinical director and the plaintiff later disagreed over how the change had been handled. Dr. Suit recommended that the plaintiff discuss the matter with the hospital’s chief medical officer, Dr. Peter Slavin. Based on a discussion with Dr. Slavin in late November, 1995, Dr. Suit came to believe that the plaintiff had lied about approvals he claimed to have secured before he had chosen the treatment plan. There was other evidence of what the hospital characterizes as the plaintiff’s “truthfulness, clinical judgment and interpersonal interactions” that ultimately resulted in Dr. Suit’s recommendation that the plaintiff’s clinical privileges be limited.
Dr. Suit testified that in light of his escalating concerns, in December, 1995, he recommended that the plaintiff’s reappointment to the medical staff be limited to six months, and that his clinical work be supervised. The hospital’s general executive committee (GEC) considered Dr. Suit’s recommendation in January, 1996,12 and voted unanimously to recommend that the plaintiff be reappointed for a six-month period without clinical privileges.13 The hospital’s board of trustees (board) adopted the recommendation on January 19, 1996. The plaintiff appealed from the decision to a staff review committee.14 In June, 1996, [8]*8when his temporary reappointment expired, the plaintiff’s employment was terminated.
In February, 1998, after a hearing, the staff review committee recommended that the board reverse its decision with respect to the plaintiff’s clinical privileges. The staff review committee upheld the board’s decision denying the plaintiff’s application for reappointment in July, 1996. The board restored the plaintiffs clinical privileges nunc pro tune for the period January to June, 1996. The plaintiff filed suit against the hospital and others15 in May, 1998.
2. The medical peer review privilege. The plaintiff challenges the judge’s pretrial order denying his request for the discovery of certain documents the hospital claimed were privileged under the medical peer review statute, G. L. c. Ill, § 204 (a), because, he asserts, his allegations of “bad faith” on the part of Dr. Suit, Dr. Slavin, and the clinical director triggered the statutory exception to the privilege. The exception permits discovery of medical peer review materials where a committee member did not act “in good faith” and “in the reasonable belief” that his actions were warranted. See G. L. c. 111, § 204 (b).16 See also G. L. c. 111, § 203 (c).17 The judge properly resolved the question in favor of the hospital.
[9]*9In a discrimination action alleging disparate treatment, obtaining comparative information about an employer’s treatment of similarly situated employees is often critical to the plaintiff’s case. See, e.g., Matthews v. Ocean Spray Cranberries, Inc., 426 Mass. 122, 129 (1997), citing Smith College v. Massachusetts Comm’n Against Discrimination, 376 Mass. 221, 228 (1978) (“The most probative means of establishing that the plaintiff s termination was a pretext for . . . discrimination is to demonstrate that similarly situated . . . employees were treated differently”). Here, the plaintiff requested “all documents” relating to patient care deficiencies by other members of the department’s medical staff and the discipline of such staff,18 as well as “[a]ll documents” relating to other physicians denied clinical and research privileges or reappointment “from 1986 to the present.” In response to the hospital’s invocation of the medical peer review privilege, the plaintiff cited the statutory exception to the privilege, arguing that the privilege yielded to any allegation of “bad faith,” in particular, any allegation of discriminatory conduct. After multiple submissions by the parties concerning the plaintiff’s motion to compel, which the judge addressed with admirable attention to detail, see Carr v. Howard, 426 Mass 514, 529 (1998), she ordered the hospital to produce a significant amount of the requested information,19 but denied the plaintiff’s motion to the extent it requested docu[10]*10ments she concluded were covered by the medical peer review privilege.20
The judge was correct to rule as she did. The Legislature has mandated that the medical profession regulate the quality of patient care by identifying and remedying instances of substandard care at least in part through internal medical peer review proceedings. See, e.g., G. L. c. 111, § 203 (a), (d).21 See also Carr v. Howard, supra at 517-518 (discussing history and purpose of medical peer review process). To that end, the Legislature enacted the medical peer review privilege, insulating from discovery certain material submitted to or produced by [11]*11a medical peer review committee, G. L. c. 111, §§ 203-204, inserted by St. 1986, c. 351, § 9, a privilege not recognized at common law. See Cronin v. Strayer, supra at 535 (common-law privilege not recognized for records of impaired physician committee of Massachusetts Medical Society). The obvious purpose of the statutory medical peer review privilege is to “promote candor and confidentiality” in the peer review process, Carr v. Howard, supra at 518, and “to foster aggressive critiquing of medical care by the provider’s peers,” Beth Israel Hosp. Ass’n v. Board of Registration in Med., 401 Mass. 172, 182 (1987). See Ayash v. Dana-Farber Cancer Inst., 443 Mass. 367, 396 (2005) (“Physicians would be far less willing candidly to report, testify about, and investigate concerns of patient safety if their actions would be subject to later scrutiny and possible litigation”).
The Legislature provided a single, narrow exception to the privilege “to establish” that a member of a peer review committee did not act “in good faith and in the reasonable belief that based on all of the facts the action or inaction on his part was warranted” during the peer review process. See G. L. c. 111, § 204 (b); G. L. c. 231, § 85N.22 Neither the language of the statute nor its legislative history elucidates the precise boundaries the Legislature sought to establish when abrogating the immunity from discovery in certain cases. Taking into account the compelling public policy the privilege was established to advance, we conclude that the privilege can only be invaded on some threshold showing that a member of a medical peer review committee did not act in good faith in connection with his activities as a member of the committee, for example did not provide the medical peer review committee with a full and honest disclosure of all of the relevant circumstances, but sought [12]*12to mislead the committee in some manner.23,24 The focus must be on the committee member’s actions within the peer review committee process itself, not on possible discriminatory reasons for initiating a review of the plaintiff’s work. Cf. Birbiglia v. Saint Vincent Hosp., Inc., 427 Mass. 80, 84-86 (1998) (no evidence warranting finding of “bad faith” in medical peer review process where plaintiff made no attempt to demonstrate what allegedly biased and knowingly false evidence hospital relied on, and where plaintiff did not point to specific evidence tending to prove that hospital’s executive committee or board knew that any evidence was biased or knowingly false). See Doe v. St. Joseph’s Hosp. of Fort Wayne, 42 Empl. Prac. Dec. (CCH) par. 36,973 (N.D. Ind. 1987) (in discrimination case, to overcome medical peer review privilege plaintiff must “allege facts which create more than a mere inference that the actions of the peer review committee were discriminatory, before the court will permit even an in camera inspection of the com[13]*13munications to, records of or determination of the peer review committee”).
Here, Dr. Suit’s concerns about the plaintiff’s performance were initially triggered in substantial part by the complaint received from Dr. Hartford. His concerns were heightened when he received Dr. Thornton’s comprehensive letter outlining numerous performance shortcomings of the plaintiff. There is no allegation by the plaintiff that either Dr. Hartford or Dr. Thornton harbored any animus toward him.25 Their respective written complaints to Dr. Suit would give rise to the gravest concern of any supervising physician. Patients receiving treatment in the department are extremely ill, subjected to life-threatening treatments. Had the express concerns of Dr. Hartford and Dr. Thornton not been acted on, and had the scrutiny of the plaintiff’s work not intensified, Dr. Suit could well have been viewed as derelict in his duties. In Massachusetts, as elsewhere, medical peer review is not a choice, but a legislative requirement. See G. L. c. Ill, § 203. No physician is at liberty to avoid that mandate. Even assuming that Dr. Suit had treated the plaintiff “differently” in some respect because he is homosexual (by recommending to the GEC that the plaintiff’s privileges be limited rather than merely reporting his concerns to the GEC, for example), the plaintiff has not pointed to evidence that discriminatory animus rather than a legitimate concern for patient care infected the actual medical peer review process.26 See Ayash v. Dana-Farber Cancer Inst., 443 Mass. 367, 399 (2005) (evidence did not warrant inference that [14]*14supervising physician’s “misplaced focus” on plaintiff was “deliberate, or motivated by a ‘spiteful, malignant purpose’ to hurt the plaintiff that was unrelated to [supervising physician’s] professional responsibilities” [citations omitted]).
We emphasize that, in the face of the hospital’s opposition to the plaintiff’s broad discovery requests, the judge ordered the hospital to produce substantial discovery. The plaintiff reviewed, among other items, the written materials that triggered Dr. Suit’s concerns; the promotional files for other doctors considered for academic positions at Harvard Medical School; all residency teaching evaluations of medical staff members from 1990 to 1996; and the transcripts and other records of the staff review committee. The plaintiff deposed all of the key decisionmakers. The only information not ordered disclosed was the privileged materials of the peer review committees. We also note that the thrust of the plaintiff’s challenge was to obtain not the materials of the GEC when it acted on Dr. Suit’s complaint concerning the plaintiff himself, but the records of numerous other peer review proceedings that had nothing to do with the plaintiff. See notes 19 and 20, supra. That the plaintiff did not seek an interlocutory appeal from the small segment of documents not ordered produced speaks volumes of the lack of importance he attached to those documents before trial.
The Legislature has made clear that, in this Commonwealth, discrimination on the basis of sexual orientation is against public policy and shall not be tolerated. See G. L. c. 151B, § 4. It has established and funded a special commission to investigate and [15]*15pass on complaints of unlawful discrimination. See G. L. c. 6, § 56. See also G. L. c. 151B, §§ 2, 3. The Legislature has also sought to eradicate “conduct by a health care provider that indicates incompetency ... or conduct that might be inconsistent with or harmful to good patient care or safety.” G. L. c. 111, § 203 (a). In balancing these two important societal goals, the Legislature did not provide a blanket exception to the medical peer review privilege where there is a claim that a physician’s actions are motivated by discriminatory animus. The medical peer review privilege was enacted to promote “the uninhibited expression of professional opinions before a [peer review committee] and protects the [peer review committee’s] work product.” Beth Israel Hosp. Ass’n v. Board of Registration in Med., 401 Mass. 172, 183 (1987).27 It is that work of the committee that the privilege protects, and unless the work can be shown to be tainted, then the privilege applies. See id. at 182 (“reading the exception to the [medical peer review] privilege narrowly is consistent with our cases where we have refused to add to the listed exceptions to a given statutory privilege”). See also Doe v. St. Joseph’s Hosp. of Fort Wayne, 42 Empl. Prac. Dec. (CCH) par. 36,973 at 46,737 (N.D. Ind. 1987) (in discrimination case statutory “privilege granted to the peer review committee ought to be sedulously fostered”).
The plaintiff relies on discrimination cases in which Federal courts have declined to recognize a Federal common-law medical peer review privilege. See, e.g., Virmani v. Novant Health, Inc., 259 F.3d 284, 289 (4th Cir. 2001) (refusing to recognize privilege under Federal common law for medical peer review records in Federal discrimination actions, because “interest in [16]*16facilitating the eradication of discrimination by providing perhaps the only evidence that can establish its occurrence outweighs the interest in promoting candor in the medical peer review process”).28 Those cases are irrelevant because our Legislature has created a statutory medical peer review privilege that we must effectuate. In any event, our decision is not inconsistent with the Federal holdings on which the plaintiff relies. In each case a judge must determine whether a medical peer review privilege exists. The judge must then, and only then, examine whether the privilege applies to a particular document, as the judge did here. See Carr v. Howard, 426 Mass. 514, 529 (1998). Once the judge has made that determination, the burden shifts to the plaintiff to make a showing that the proceedings themselves (rather than the reasons for initiating the proceedings, which the plaintiff was free to discover) were not conducted “in good faith.”
We have recognized that “the peer review privilege imposes some hardship on litigants seeking to discover information from hospital records, but the Legislature has clearly chosen to impose that burden on individual litigants in order to improve [17]*17the medical peer review process generally.” Id. at 532. We have carefully reviewed all of the materials before the judge that are included in the record. We have no doubt that, in this case, the plaintiff did not meet that burden.
3. Hearsay evidence. The plaintiff claims that it was error for the judge to admit in evidence the Hartford memorandum, see note 9, supra, and the Thornton letter and to permit testimony concerning their contents. At trial he objected to the admission of the two documents and to Dr. Suit’s testimony about the Hartford memorandum only.29 We focus our discussion on those claims.
We first describe the circumstances in which the challenged evidence was admitted. The hospital sought to admit the Hartford memorandum during Dr. Suit’s testimony. The plaintiff objected, and the judge held a sidebar conference and ruled that the document was “coming in to show, if believed, why Dr. Suit took the action that he took.” The document was admitted, and the judge gave the jury an appropriate limiting instruction. Dr. Suit then testified that he had received the document and spoken with Dr. Hartford, and explained to the jury why he thought each concern mentioned in the document was important. The following day Dr. Suit continued testifying about the substance of the Hartford memorandum, the plaintiff again objected, and the judge gave a second detailed and entirely correct limiting instruction to the jury. Later Dr. Hartford testified about his reasons for writing the memorandum, and testified, without objection, about the “essential problem” he had with the plaintiff and about the substance of some of the specific concerns contained in his memorandum.
During Dr. Suit’s testimony, defense counsel also moved to admit the Thornton letter. The plaintiff objected on the ground of hearsay. The judge went through the letter paragraph by paragraph and ordered redaction of some of its contents. The redacted letter was admitted, and both Dr. Suit and Dr. Thornton were permitted to testify about its substance. The plaintiff did not object to Dr. Suit’s testimony, nor did he raise any objection [18]*18while Dr. Thornton was testifying.30 We now turn to the judge’s rulings.
The admission of evidence is within the broad discretion of the judge. See Zucco v. Kane, 439 Mass. 503, 507 (2003). Here, the plaintiff maintains that testimony concerning the Hartford memorandum and the Thornton letter was admissible to prove only that the person to whom these materials were addressed, Dr. Suit, had notice or knowledge of their contents. Relying on Commonwealth v. Rosario, 430 Mass. 505, 509 (1999), the plaintiff argues that admission of the documents themselves, and the challenged testimony, should not have been permitted as this went “far beyond” the notice and knowledge under the exception, creating unfair prejudice to him.31 There was no error.
Both the Hartford memorandum and the Thornton letter were themselves properly admitted to show notice and knowledge on the part of Dr. Suit. See RJ. Liacos, M.S. Brodin, & M. Avery, Massachusetts Evidence § 8.2.2, at 466 (7th ed. 1999) (“An extrajudicial statement is not hearsay when offered to prove that the person to whom it was addressed had notice or knowledge of the contents of the statement”). The documents and the related testimony also pertained directly to the hospital’s lawful, nondiscriminatory reasons for its employment decisions concerning the plaintiff. See Abramian v. President & Fellows of Harvard College, 432 Mass. 107, 117-118 (2000). Under the state of mind exception, both documents and the testimony concerning them were properly admitted to explain why Dr. Suit took the actions he did concerning the plaintiff. See P.J. Liacos, M.S. Brodin, & M. Avery, Massachusetts Evidence, supra at § 8.2.2, at 470-471 (“Where a statement is offered to prove the effect it had on the listener’s state of mind, that state of mind must be relevant to an issue properly in the case”). See [19]*19also Commonwealth v. Bregoli, 431 Mass. 265, 273 (2000) (“A defendant’s knowledge of the contents of the statements must be directly relevant for them to be admissible on this basis,” referring to notice and knowledge exception).
All of the challenged evidence was relevant to Dr. Suit’s state of mind insofar as it served as a basis for the adverse action he took against the plaintiff. The judge’s two limiting instructions, one given when requested, ensured that the jury would not find that the underlying criticism of Dr. Hartford and Dr. Thornton was necessarily true.32 There was no abuse of discretion.
4. Jury instructions on the retaliation claim. The plaintiff argues that the judge should have instructed the jury on two points relating to his retaliation claim. First, he claims that the judge improperly refused to instruct the jury that the nearness in time between the protected activity33 and the adverse action permits an inference of retaliation. Next, he asserts that the judge should have informed the jury that, if the plaintiff reasonably and in good faith believed that the hospital had discriminated against him, filing a charge of discrimination with the MCAD was a per se reasonable activity. We turn first to the requested neamess-in-time instruction.
The jury are permitted to infer retaliation from the “timing and sequence of events.” Mole v. University of Mass., 442 Mass. 582, 592 (2004). Such an inference may be drawn “if adverse action is taken against a satisfactorily performing [20]*20employee in the immediate aftermath of the employer’s becoming aware of the employee’s protected activity,” or “[w]here adverse employment actions follow close on the heels of protected activity . . . .” Id. at 592, 595. We cautioned that where “adverse employment actions or other problems with an employee predate any knowledge that the employee has engaged in protected activity, it is not permissible to draw the inference that subsequent adverse actions, taken after the employer acquires such knowledge, are motivated by retaliation.” Id. at 594. Having reviewed the evidence in this case, we conclude that the judge did not abuse her discretion in declining to give the requested instruction.
It is the general rule that “[t]he extent to which a judge shall discuss the evidence or the subsidiary facts is generally within [her] discretion.” Barnes v. Berkshire St. Ry., 281 Mass. 47, 50-52 (1932). We recognize that in a retaliation case such as this, there is often no direct evidence of discrimination or retaliation, and a plaintiff’s proof will often depend on circumstantial evidence. Because direct evidence of retaliation is rare, a neamess-in-time instruction may fall within an exception to the general mie just stated: “Sometimes the issue depends upon the existence of some fact, theoretically subsidiary but practically decisive if found. In such a case, for a judge to ignore the simple concrete test and submit the case upon abstract general instructions blurs the point and may mislead the jury.” Id. at 52. Cf. Bouley v. Reisman, 38 Mass. App. Ct. 118, 122-123 (1995) (instruction on possible inference not required where several inferences possible). Thus, although falling within a judge’s discretion, in a discrimination or retaliation case based on circumstantial evidence, a neamess-in-time instruction should be given if the evidence supports it, and if requested. Id. Where there is conflicting evidence concerning the inference for which the instruction is requested, however, a judge retains her broad authority to decide whether to include the instmction. Id. at 123.
In this case there was sharply conflicting evidence regarding the sequence and timing of events. Specifically, there was conflicting evidence as to when the plaintiff first told Dr. Suit he was concerned about discrimination based on his sexual [21]*21orientation. See note 8, supra.34 Moreover, by the time the plaintiff filed his MCAD complaint, Dr. Suit had already taken steps to limit the plaintiff’s responsibilities based on Dr. Suit’s concerns about the plaintiff’s performance. See Mole v. University of Mass., supra at 594. Nothing precluded the plaintiff from arguing the point in his closing argument,35 and the judge gave detailed instructions to the jury about their role in determining the credibility of the witnesses and the inferences the jury might draw from the circumstantial evidence presented at the trial on both the discrimination and retaliation claims. See Bouley v. Reisman, supra at 123. Once a judge has instructed that retaliation may be proved by circumstantial evidence, she may, within her discretion, give a more specific instruction (retaliation may be inferred if the jury find adverse employment action taken soon after an expression of protected activity), but need not be so specific when there is conflicting evidence on the point. Here, it was not an abuse of discretion for the judge to decline to give the more specific instruction.
The second claim of error concerns the judge’s response to a jury question about the second element of a retaliation claim: that the plaintiff acted reasonably in response to his belief that his employer was discriminating against him. A retaliation claim requires proof that (1) the plaintiff reasonably and in good faith believed that the employer was engaged in wrongful discrimination; (2) that he acted reasonably in response to that belief; and (3) that there is a causal connection between the protected conduct and an adverse employment action. Mole v. University of Mass., supra at 591-592. On the second day of deliberations, the jury requested that the judge “clearly” define for them “what actions would have been ‘reasonable’ in filing a [22]*22complaint with the MCAD,” i.e., the second element. The judge advised the jury that this was a question for them to determine. Specifically, she instructed:
“[Wjhether the filing was reasonable is entirely up to you to decide from all of the evidence that you have in this case. A reasonable person is an ordinarily sensible, prudent person, one who is discerning in the management of practical affairs.”
The judge further instructed: “When I say ‘reasonable person,’ I mean a reasonable person in [the plaintiff’s] position in all of the circumstances that you’ve heard about in this case on the date in question.” On appeal, the plaintiff argues that where an individual reasonably and in good faith believes that discrimination has occurred, filing a charge of discrimination with the MCAD is per se reasonable and that the jury should have been so instructed.36
The judge properly instructed the jurors that the question of reasonableness was a question of fact for them to decide. To instruct the jury as the plaintiff requested would remove the is[23]*23sue, a required element of establishing a claim of retaliation, from the jury. See Abramian v. President & Fellows of Harvard College, 432 Mass. 107, 117-118 (2000) (jury instruction “should not have been given because it stripped the jury of its fact-finding role,” where it informed jury that finding of pretext compelled finding of discrimination). It may be that in many cases, once the jury find that the plaintiff held a good faith and reasonable belief of discrimination, the jury will also find that the plaintiffs charge of discrimination with the MCAD was reasonable. But that is not the only possible outcome. As the judge noted, the filing of a charge can be used as “a smokescreen in challenge to the supervisor’s legitimate criticism.” Monteiro v. Poole Silver Co., 615 F.2d 4, 8 (1st Cir. 1980).37 The judge properly determined that the jury should decide whether in this particular case the plaintiff’s filing of a charge with the MCAD was reasonable.
Judgment affirmed.