
On Monday, the National Labor Relations Board (the “Board” or “NLRB”), with a majority of appointees by President Biden, i.e., “the Biden-Board,” reversed the short-lived General Motors LLC, 369 NLRB No. 127 (2020) decision and reinstated the Atlantic Steel test for analyzing whether an employee’s grossly unprofessional conduct when engaging in union or other protected concerted activity loses the protection of the National Labor Relations Act (“Act”). The Board issued Lion Elastomers, LLC, 372 NLRB No. 83 (2023) and reinstated Atlantic Steel 245 NLRB 814 (1979) and its progeny, making it more difficult for employers to discipline employees who engage in outrageous, otherwise inappropriate, speech and/or actions in the course of engaging in union or other protected concerted activity.