Employment Litigation · Primary-source case analysis

Manhart: Sex-Based Pension Contributions Violated Title VII Despite Group Longevity Statistics

By Aneeta Mishra and Timothy Chan

Published May 22, 2026 · Updated October 17, 2026

Decision: City of Los Angeles Dep’t of Water and Power v. Manhart, 435 U.S. 702 (1978).

City of Los Angeles Department of Water and Power v. Manhart was decided by the Supreme Court on April 25, 1978. It involved a pension plan that charged women more because women as a class were expected to live longer, although monthly benefits were equal for individual retirees.

Title VII focused on individual treatment

An employer could not charge an individual woman more merely because women on average lived longer than men.

Accurate group statistics did not authorize sex pricing

Even a real average difference could not justify a contribution rule that classified every employee by sex.

Equal benefits did not cure unequal pay deductions

The higher required contribution reduced women’s take-home compensation for the same promised pension.

Retroactive relief was limited

The Court agreed that the sex-based contribution rule violated Title VII, but held that retroactive monetary relief was improper in this case. It considered administrators’ reliance on earlier practice and the impact on pension funding, then vacated the appellate judgment and remanded. That case-specific result did not erase the usual presumption favoring retroactive relief.

Key takeaways

• Compare employee contributions for the same benefit.
• Identify every explicit sex-based classification.
• Do not substitute group averages for individual treatment.
• Analyze prospective correction separately from retroactive monetary relief.