A federal judge ruled that President Donald Trump illegally fired National Labor Relations Board member Gwynne Wilcox in January, ordering the Biden appointee be reinstated to the five-seat board, which has lacked a quorum since her removal.

The January firings of Wilcox and NLRB general counsel Jennifer Abruzzo were an early test of the Trump administration’s power. Though the law specifies a board member can only be fired for “neglect of duty or malfeasance in office,” Trump dismissed Wilcox via email and named right-wing board member Marvin Kaplan as chair.