Microsoft Corp has asked a federal court to throw out a ruling by a US labor board extending the responsibility of companies for contract workers, arguing that the case would have big implications for the technology company.
An August 2015 decision by the National Labor Relations Board expanded the definition of a "joint employer," which could require more companies to bargain with and have liability for workers hired by contractors.
The decision expanded the test for joint employment beyond whether a company had "direct and immediate" control over employment conditions of another company's workers, to consider indirect or unexercised control. The case is now before the US Court of Appeals for the D.C. Circuit.