The Republican-controlled House is set to approve a bill allowing workers to trade their overtime pay for more time off.
The measure would allow employees who work more than 40 hours a week to save up their earned time off for use weeks or months later. GOP lawmakers say it gives workers at private firms the same flexibility that public sector workers already have.
Democrats and worker advocacy groups oppose the measure, saying it opens the door for employers to pressure workers not to take overtime pay. They warn there is no guarantee workers would be able to take the extra time off when they want.
The bill is expected to pass Wednesday but has little chance in the Democratic-controlled Senate. The White House has threatened a veto.