At the below link, you will find an Executive Order from President Biden revoking Trump Executive Orders 13836, 13837, and 13839.

 

In addition, the Executive Order requires that “The head of each agency subject to the provisions of chapter 71 of title 5, United States Code, shall elect to negotiate over the subjects set forth in 5 U.S.C. 7106(b)(1) and shall instruct subordinate officials to do the same.

 

https://www.whitehouse.gov/briefing-room/presidential-actions/2021/01/22/executive-order-protecting-the-federal-workforce/