Union leaders are unhappy with some of the new changes to the $670 billion small business pandemic relief program, warning that they would undermine the purpose of the aid: keeping employees on the payroll.

The changes in question were enacted through a bipartisan bill President Trump signed into law and lower (from 75% to 60%) the share of the funds that small businesses must spend on payroll to qualify for full loan forgiveness. This change could shift money away from worker pay, the unions say.