Former New York Supreme Court Justice Matthew A. Rosenbaum abruptly resigned last month amid allegations that he abused staff and created a hostile workplace environment throughout his 14 years on the bench, a state disciplinary panel said Wednesday.

Rosenbaum was reelected in November to serve as a judge in Rochester, a position he had held from 2005 to 2019, but vacated his chambers late last year and had not resumed his duties since Dec. 31. His new 14-year term had been set to begin Jan. 1.