Whether a federal court may borrow a federal limitations period rather than an analogous state limitations period for a hybrid § 301/duty-of-fair-representation suit.
Holding
Yes. Although borrowing state limitations periods is ordinarily the rule when Congress has not supplied one, courts may borrow a more suitable federal period when federal policy and litigation realities make it clearly more appropriate.
Reasoning
The Court treated the choice of a limitations period for a federal cause of action as a question of federal law. State law is normally the starting point, but it is not mandatory when its use would frustrate the operation of federal substantive law or conflict with important national policies.
The Rules of Decision Act did not compel use of state law. It applies state law only when federal law does not otherwise require or provide a rule; federal courts may fashion interstitial federal law to effectuate a federal statutory scheme. The Court emphasized that this authority does not displace the usual practice of borrowing state periods merely because no state analogue is perfect.
This hybrid action differs materially from the ordinary § 301 contract action in Auto Workers v. Hoosier Cardinal Corp. It directly challenges the finality of the collectively bargained grievance process, and it combines a contractual claim against the employer with a fair-representation claim implied from federal labor law. Those features make the need for a nationally appropriate limitations rule more substantial.