The Trump administration is firing thousands of federal workers on probationary status, or those without civil service protections.

Federal workers were responding with anger and confusion Friday as they grappled with the Trump administration’s latest effort to shrink the size of the federal workforce by ordering agencies to lay off probationary employees who have yet to qualify for civil service protections.

Many of those impacted say they had already accepted the administration’s deferred resignation offer, under which they were supposed to be paid until Sept. 30 if they agreed to quit.