Monell v. Department of Social Services of the City of New York

Female employees of New York City's Department of Social Services and Board of Education brought a class action under 42 U.S.C. § 1983.

They alleged that official maternity-leave policies forced pregnant employees onto unpaid leave before medical necessity required it. Lower courts found the policy unconstitutional but denied backpay because prior precedent treated municipalities as immune from § 1983 damages suits.

The dispute reached the courts because the police action, prosecution, civil-rights claim, or government policy raised a constitutional question that could not be answered by the facts alone.

Are local governments and local officials sued in their official capacities 'persons' subject to suit under 42 U.S.C. § 1983, and may they be liable for constitutional violations caused by official policy or custom?

In plain English, the court had to decide where police authority ended and constitutional protection began under the facts of this case.

Yes. The Supreme Court held that local governments are 'persons' under § 1983 and may be sued for monetary, declaratory, or injunctive relief when an unconstitutional action implements official policy, regulation, decision, or custom. But a municipality is not liable merely because it employs someone who committed a constitutional tort; respondeat superior does not apply.

The decision matters because monell created the basic framework for municipal civil-rights liability. For police departments, sheriffs' offices, counties, and cities, liability generally requires proof that a policy, custom, failure to train, or official decision caused the constitutional violation, not just that an employee acted unlawfully.

A city can be sued under § 1983 when its own policy or custom causes a constitutional violation. But the city is not automatically responsible for every unconstitutional act by one employee.

Monell remains central in police-misconduct and civil-rights litigation. Plaintiffs often use it to challenge agency policies, training, supervision, discipline, or recurring customs. Agencies use it as a reminder that written policy, real-world practice, and training records can determine whether a case is only about an individual officer or about the government itself.