Since 1999, John R. Durso has served as the president of Local 338 RWDSU/UFCW, a labor union representing more than 13,000 working men and women across New York State and parts of New Jersey. Local 338 members are employed in various industries and roles including in grocery and food retail, drug stores and retail pharmacy chains, healthcare and human services, and cannabis, among others. He is also the president of the Long Island Federation of Labor, AFL-CIO, the fourth-largest central labor council in the United States, representing 250,000 union members in Nassau and Suffolk Counties, a role he has held since 2005.
Additionally, Durso serves as international vice president of the United Food and Commercial Workers (UFCW); vice president of the Retail, Wholesale and Department Store Union (RWDSU), a Council within the UFCW; and vice president of the New York City Central Labor Council.