The Department of Veteran Affairs said it's terminating collective bargaining agreements for most VA employees, including at least 16,000 nurses .
The move affects several unions -- including National Nurses United (NNU) and the Service Employees International Union (SEIU) -- and an estimated 400,000 workers . Contracts for 4,000 police officers, security guards, and firefighters won't be affected, the VA said.
The action follows an executive order ending collective bargaining rights for many federal employees, which has been challenged by a lawsuit brought by the affected unions that's currently working its way through the courts.
In a press release , the VA said the change would increase the time that staff can spend with veterans, and enable evaluation of employees on per