Sen. Bernard Sanders of Vermont is calling forthe federal government to make millions more workers eligible for overtime pay.

“We need to change outdated overtime rules so that businesses can’t shirk their responsibility simply by labeling workers earning as little as $24,000 a year as supervisors,” Sanders said.

Sanders and 25 other senators sent a letter to the White House urging the U.S. Department of Labor to curb the practice of companies which now classify many low-wage workers as “supervisors” in order to avoid paying them overtime.

People earning less than $455 per week are required by law to be paid time-and-a-half if they work more than 40 hours per week. Sanders wants the president to raise the pay threshold to $1,090 per week.

“Too many Americans are working longer and harder without anything to show for their efforts in their paychecks,” Sanders and Sen. Patty Murray, D-Wash., wrote in the letter signed by two dozen other senators.