Lenk, J.
In this case, we consider whether sovereign immunity bars a plaintiff who is awarded punitive damages, costs, and attorney’s fees as part of a judgment under G. L. c. 15IB, § 9, from recovering postjudgment interest on those awards from a public employer. The trial judge denied a request by the plaintiff, Helen Brown, for such interest, concluding that sovereign immu
nity has not been waived with respect to such interest, and judgment was entered accordingly. A divided panel of the Appeals Court affirmed the judgment, see
Brown
v.
Office of the Commissioner of Probation,
87 Mass. App. Ct. 729, 735 (2015), and we allowed the plaintiffs application for further appellate review. Because we conclude that G. L. c. 15IB, § 9, does not waive sovereign immunity from liability for postjudgment interest, either expressly or by necessary implication, we affirm.
Background.
We recite only those facts necessary for understanding in context the question of law at issue here. The plaintiff and a colleague sued the defendant, the office of the Commissioner of Probation, for sex discrimination, race discrimination, and retaliation, pursuant to the procedure set forth in G. L. c. 151B, § 9. On February 9, 2011, a Superior Court jury found for the plaintiff on her retaliation claim,
and awarded $6,000 in compensatory damages and $500,000 in punitive damages. The award of punitive damages was reduced to $108,000 by an order of remittitur. On January 18,2012, the office of the Commissioner of Probation additionally was ordered to pay $233,463.48 in attorney’s fees and $13,294.47 in costs related to the trial.
Following a decision by the Appeals Court affirming the order of remittitur,
judgment after rescript was entered on March 12, 2014. That judgment, which provided for prejudgment interest and was paid in full on July 15, 2014, did not provide for the requested postjudgment interest.
Discussion.
The plaintiff contends that her request for post-judgment interest on punitive damages, costs, and attorney’s fees should have been granted, because G. L. c. 151B generally waives sovereign immunity with respect to such interest.
As that argument presents a question of law, we consider it de novo. See
Commonwealth
v.
Spencer,
465 Mass. 32, 46 (2013).
“The general rule of law with respect to sovereign immunity is that the Commonwealth or any of its instrumentalities ‘cannot be impleaded in its own courts except with its consent, and, when that consent is granted, it can be impleaded only in the manner and to the extent expressed [by] statute.’ ”
DeRoche
v.
Massachusetts Comm’n Against Discrimination,
447 Mass. 1, 12 (2006), quoting
General Elec. Co.
v.
Commonwealth,
329 Mass. 661, 664 (1953). While G. L. c. 235, § 8, provides for postjudgment interest against private entities for “[e]very judgment for the payment of money,” that statute does not apply to claims against the Commonwealth or its subdivisions. See
Onofrio
v.
Department of Mental Health,
411 Mass. 657, 660 n.5 (1992), citing
C & M Constr. Co.
v.
Commonwealth,
396 Mass. 390, 393 (1985). Thus, public employers are not liable for postjudgment interest unless some other statute clearly waives sovereign immunity with respect to such interest. See
Sheriff of Suffolk County
v.
Jail Officers & Employees of Suffolk County,
465 Mass. 584, 597 (2013). The plaintiff argues that G. L. c. 151B contains such a waiver.
General Laws c. 151B, the antidiscrimination statute, establishes the remedies available in judicial and agency proceedings against defendants who have engaged in unlawful discrimination and retaliation. The statute waives sovereign immunity in several respects by including the Commonwealth “and all political subdivisions ... thereof’ in its definition of the persons and employers subject to it.
See DeRoche, supra
at 12, citing G. L. c. 151B, § 1 (1) and (5). For example, sovereign immunity has been waived with respect to the recovery of punitive damages under G. L. c. 151B, § 9, which establishes the remedies available for a plaintiff who raises a claim of discrimination or retaliation in a judicial proceeding. See
Bain
v.
Springfield,
424 Mass. 758, 763 (1997). Sovereign immunity also has been waived with respect to the recovery of prejudgment interest on an award of back pay under G. L. c. 15IB, § 5, which establishes the remedies available to a
plaintiff who raises such claims in an agency proceeding before the Massachusetts Commission Against Discrimination (commission). See
DeRoche, supra
at 14.
We have yet to consider, however, whether sovereign immunity has been waived with respect to the recovery of postjudgment interest under G. L. c. 151B, § 9.
In the plaintiffs view,
DeRoche, supra
at 13-14, interpreted G. L. c. 15IB as expressing a general waiver of sovereign immunity, thereby making public employers liable for all remedies for which private employers are liable. The plaintiff reasons that, because postjudgment interest is available under G. L. c. 151B on a judgment against a private employer, see
Nardone
v.
Patrick Motor Sales, Inc.,
46 Mass. App. Ct. 452, 454 (1999), such interest also must be available against public employers. We do not agree.
In
DeRoche, supra,
we considered whether G. L. c. 15IB, § 5, which empowers the commission to “take such affirmative action, including, but not limited to, hiring, reinstatement or upgrading of employees, with or without back pay, ... as, in the judgment of the commission, will effectuate the purposes of this chapter,” allows for an award of prejudgment interest against a public employer. At the time
DeRoche
was decided, we already had held, in the private employment context, that the language of G. L. c. 15IB, § 5, by its own terms, permits the commission to impose prejudgment interest as a remedy. See, e.g.,
New York & Mass. Motor Serv., Inc.
v.
Massachusetts Comm’n Against Discrimination,
401 Mass. 566, 583 (1988). In keeping with that precedent, we concluded in
DeRoche, supra
at 14, that G. L. c. 15IB, § 5, waives sovereign immunity from liability for prejudgment inter
est, “[bjecause G. L. c. 151B, § 5, authorizes the remedy of prejudgment interest, and public employers are, by virtue of § 1 (1) and (5), subject to the mandates of the statute.” We did not, however, conclude that G. L. c. 15 IB includes a waiver of sovereign immunity in all respects.
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Lenk, J.
In this case, we consider whether sovereign immunity bars a plaintiff who is awarded punitive damages, costs, and attorney’s fees as part of a judgment under G. L. c. 15IB, § 9, from recovering postjudgment interest on those awards from a public employer. The trial judge denied a request by the plaintiff, Helen Brown, for such interest, concluding that sovereign immu
nity has not been waived with respect to such interest, and judgment was entered accordingly. A divided panel of the Appeals Court affirmed the judgment, see
Brown
v.
Office of the Commissioner of Probation,
87 Mass. App. Ct. 729, 735 (2015), and we allowed the plaintiffs application for further appellate review. Because we conclude that G. L. c. 15IB, § 9, does not waive sovereign immunity from liability for postjudgment interest, either expressly or by necessary implication, we affirm.
Background.
We recite only those facts necessary for understanding in context the question of law at issue here. The plaintiff and a colleague sued the defendant, the office of the Commissioner of Probation, for sex discrimination, race discrimination, and retaliation, pursuant to the procedure set forth in G. L. c. 151B, § 9. On February 9, 2011, a Superior Court jury found for the plaintiff on her retaliation claim,
and awarded $6,000 in compensatory damages and $500,000 in punitive damages. The award of punitive damages was reduced to $108,000 by an order of remittitur. On January 18,2012, the office of the Commissioner of Probation additionally was ordered to pay $233,463.48 in attorney’s fees and $13,294.47 in costs related to the trial.
Following a decision by the Appeals Court affirming the order of remittitur,
judgment after rescript was entered on March 12, 2014. That judgment, which provided for prejudgment interest and was paid in full on July 15, 2014, did not provide for the requested postjudgment interest.
Discussion.
The plaintiff contends that her request for post-judgment interest on punitive damages, costs, and attorney’s fees should have been granted, because G. L. c. 151B generally waives sovereign immunity with respect to such interest.
As that argument presents a question of law, we consider it de novo. See
Commonwealth
v.
Spencer,
465 Mass. 32, 46 (2013).
“The general rule of law with respect to sovereign immunity is that the Commonwealth or any of its instrumentalities ‘cannot be impleaded in its own courts except with its consent, and, when that consent is granted, it can be impleaded only in the manner and to the extent expressed [by] statute.’ ”
DeRoche
v.
Massachusetts Comm’n Against Discrimination,
447 Mass. 1, 12 (2006), quoting
General Elec. Co.
v.
Commonwealth,
329 Mass. 661, 664 (1953). While G. L. c. 235, § 8, provides for postjudgment interest against private entities for “[e]very judgment for the payment of money,” that statute does not apply to claims against the Commonwealth or its subdivisions. See
Onofrio
v.
Department of Mental Health,
411 Mass. 657, 660 n.5 (1992), citing
C & M Constr. Co.
v.
Commonwealth,
396 Mass. 390, 393 (1985). Thus, public employers are not liable for postjudgment interest unless some other statute clearly waives sovereign immunity with respect to such interest. See
Sheriff of Suffolk County
v.
Jail Officers & Employees of Suffolk County,
465 Mass. 584, 597 (2013). The plaintiff argues that G. L. c. 151B contains such a waiver.
General Laws c. 151B, the antidiscrimination statute, establishes the remedies available in judicial and agency proceedings against defendants who have engaged in unlawful discrimination and retaliation. The statute waives sovereign immunity in several respects by including the Commonwealth “and all political subdivisions ... thereof’ in its definition of the persons and employers subject to it.
See DeRoche, supra
at 12, citing G. L. c. 151B, § 1 (1) and (5). For example, sovereign immunity has been waived with respect to the recovery of punitive damages under G. L. c. 151B, § 9, which establishes the remedies available for a plaintiff who raises a claim of discrimination or retaliation in a judicial proceeding. See
Bain
v.
Springfield,
424 Mass. 758, 763 (1997). Sovereign immunity also has been waived with respect to the recovery of prejudgment interest on an award of back pay under G. L. c. 15IB, § 5, which establishes the remedies available to a
plaintiff who raises such claims in an agency proceeding before the Massachusetts Commission Against Discrimination (commission). See
DeRoche, supra
at 14.
We have yet to consider, however, whether sovereign immunity has been waived with respect to the recovery of postjudgment interest under G. L. c. 151B, § 9.
In the plaintiffs view,
DeRoche, supra
at 13-14, interpreted G. L. c. 15IB as expressing a general waiver of sovereign immunity, thereby making public employers liable for all remedies for which private employers are liable. The plaintiff reasons that, because postjudgment interest is available under G. L. c. 151B on a judgment against a private employer, see
Nardone
v.
Patrick Motor Sales, Inc.,
46 Mass. App. Ct. 452, 454 (1999), such interest also must be available against public employers. We do not agree.
In
DeRoche, supra,
we considered whether G. L. c. 15IB, § 5, which empowers the commission to “take such affirmative action, including, but not limited to, hiring, reinstatement or upgrading of employees, with or without back pay, ... as, in the judgment of the commission, will effectuate the purposes of this chapter,” allows for an award of prejudgment interest against a public employer. At the time
DeRoche
was decided, we already had held, in the private employment context, that the language of G. L. c. 15IB, § 5, by its own terms, permits the commission to impose prejudgment interest as a remedy. See, e.g.,
New York & Mass. Motor Serv., Inc.
v.
Massachusetts Comm’n Against Discrimination,
401 Mass. 566, 583 (1988). In keeping with that precedent, we concluded in
DeRoche, supra
at 14, that G. L. c. 15IB, § 5, waives sovereign immunity from liability for prejudgment inter
est, “[bjecause G. L. c. 151B, § 5, authorizes the remedy of prejudgment interest, and public employers are, by virtue of § 1 (1) and (5), subject to the mandates of the statute.” We did not, however, conclude that G. L. c. 15 IB includes a waiver of sovereign immunity in all respects.
Sovereign immunity advances important public policies, see
Randall
v.
Haddad,
468 Mass. 347, 358 (2014), and cases cited, and the “rules of construction governing statutory waivers of sovereign immunity accordingly are stringent” (citation omitted). See
Todino
v.
Wellfleet,
448 Mass. 234, 238 (2007). Waiver must be “expressed by the terms of a statute, or appear[ ] by necessary implication from them.”
Bain,
424 Mass. at 763, quoting
C & M Constr. Co.,
396 Mass. at 392. General Laws c. 15IB, § 9, provides, in relevant part:
“This chapter shall be construed liberally for the accomplishment of its purposes, and any law inconsistent with any provision of this chapter shall not apply, but nothing contained in this chapter shall be deemed to repeal any provision of any other law of this commonwealth relating to discrimination ....
“If the court finds for the petitioner, it may award the petitioner actual and punitive damages. If the court finds for the petitioner it shall, in addition to any other relief and irrespective of the amount in controversy, award the petitioner reasonable attorney’s fees and costs unless special circumstances would render such an award unjust.”
That language does not expressly waive sovereign immunity from liability for postjudgment interest. Contrast G. L. c. 79, § 37 (expressly waiving sovereign immunity from liability for post-judgment interest on eminent domain awards). Accordingly, we consider whether G. L. c. 151B, § 9, waives sovereign immunity with respect to such interest by necessary implication.
Sovereign immunity from liability for postjudgment interest by necessary implication requires “uncommonly forceful language” indicating a legislative intent that the Commonwealth should compensate plaintiffs without any loss whatsoever, including loss of the time value of the money awarded. See
Todino,
448 Mass. at 235. See also
Maimaron
v.
Commonwealth,
449 Mass. 167,
181 (2007). In
Todino, supra
at 236-237 & n.7, for example, we determined that G. L. c. 41, § 11 IF, which allows police officers to recover wages they are deprived of during periods of incapacity, waives sovereign immunity from liability for postjudgment interest by necessary implication, because it directs that plaintiffs be compensated “without loss of pay for the period of such incapacity,” and that “[a]ll amounts payable under [that] section shall be paid at the same times and in the same manner as, and for all purposes shall be deemed to be, . . . regular compensation.” See G. L. c. 41, § 11 IF. In that context, postjudgment interest was deemed “essential to vindicate fully an employee’s express right to continued, timely compensation.”
Todino, supra
at 238. In
Maimaron, supra
at 181, we determined that waiver of sovereign immunity from liability for postjudgment interest likewise was implied necessarily by the language of G. L. c. 258, § 9A, which indemnifies police officers “from
all
personal financial loss and expenses, including but not limited to legal fees and costs” incurred as a result of intentional torts or civil rights violations that take place in the scope of their employment (emphasis added). In making that determination, we stressed that G. L. c. 258, § 9A, “places no limitation on the nature, or extent, of the financial loss.”
Maimaron, supra.
In
Onofrio,
411 Mass. at 658-659, by contrast, we concluded that G. L. c. 258, § 2, which makes the Commonwealth and its subdivisions liable for compensatory damages up to $100,000 “for injury or loss of property or personal injury or death caused by the negligent or wrongful act or omission of any public employee while acting within the scope of his [or her] office or employment,” does not waive sovereign immunity from liability for postjudgment interest. Construing the possibility of a statutory waiver of sovereign immunity stringently, we noted that the language of G. L. c. 258, § 2, does not clearly indicate a legislative intent “to compensate the plaintiff for loss of the use of money when damages are not paid on time.”
Onofrio, supra
at 659-660. Accordingly, we determined that postjudgment interest was not implied necessarily as an additional remedy. See
id.
at 660.
Given this, we cannot say that G. L. c. 15IB, § 9, necessarily implies a waiver of sovereign immunity from liability for post-judgment interest on punitive damages, costs, or attorney’s fees. By providing for a broad range of remedies, including compensatory and punitive damages, costs, and attorney’s fees, G. L. c. 15 IB, § 9, indicates a strong legislative interest in both vindi-
eating individual rights and eradicating systemic discrimination. Notwithstanding the section’s instruction that it should “be construed liberally,” however, statutory waivers of sovereign immunity must be understood stringently. See
Todino,
448 Mass. at 238;
Onofrio, supra
at 659.
Unlike the worker’s compensation and indemnification statutes at issue in
Todino, supra,
and
Maimaron,
449 Mass. at 181, G. L. c. 151B, § 9, does not describe an “express right to continued, timely compensation.” See
Todino, supra.
Without language in G. L. c. 15IB, § 9, indicating such a clear legislative intent to compensate specifically for the time value of money owed, we are constrained to conclude that sovereign immunity bars the plaintiff in this case from recovering postjudgment interest on the awards at issue.
The Legislature remains free to revise G. L. c. 151B, § 9, to waive sovereign immunity with respect to payment of post-judgment interest, on compensatory and punitive damages. As currently enacted, however, the section does not contain “uncommonly forceful language” that necessarily implies that the Commonwealth should be liable for such postjudgment interest. See
Toclino, supra
at 235. The trial judge therefore correctly denied the plaintiff’s request for postjudgment interest on the award of punitive damages, costs, and attorney’s fees.
Judgment affirmed.