Workers’ Compensation · Primary-source case analysis

Sun Ship: State Compensation Can Operate Concurrently with Federal Longshore Coverage

By Aneeta Mishra and Timothy Chan

Published August 10, 2026 · Updated October 17, 2026

Decision: Sun Ship, Inc. v. Pa., 447 U.S. 715 (1980).

Sun Ship, Inc. v. Pennsylvania, decided June 23, 1980, reviewed Pennsylvania compensation awards to five shipbuilding or ship-repair workers whose land-based injuries also fell within the federal Longshore and Harbor Workers’ Compensation Act after its 1972 expansion. The unanimous Court held that the federal expansion did not displace the state remedy.

Federal coverage moved landward in 1972

Congress expanded the Longshore Act beyond injuries occurring on navigable waters to specified adjoining maritime areas.

Expansion did not preempt state remedies

The Court read the federal law as filling coverage gaps and preserving concurrent state authority rather than occupying the entire field.

Concurrent jurisdiction can produce overlapping entitlements

The worker must qualify under each system separately. Under the federal Act, both the covered maritime work and the covered injury location matter; federal eligibility does not itself establish eligibility under state law. Sun Ship, 447 U.S. at 719–725.

Double recovery is not permitted

Amounts awarded under one compensation system are credited against recovery under the other. Concurrent coverage allows coordinated remedies, not two full recoveries for the same loss. Sun Ship, 447 U.S. at 725 n.8.

Key takeaways

• Test both federal status and situs requirements.
• Independently analyze state compensation coverage.
• Coordinate notice, limitations, liens, and benefit credits.
• Do not assume federal coverage automatically eliminates the state claim.