Workers at the Cooper-Siegel Community Library in Fox Chapel and its Sharpsburg branch voted to unionize with the United Steelworkers union last month. “All workers need the protections that a union contract provides,” Smith said. USW assistanceRachael English, an organizer with USW, said library workers reached out to them for unionization assistance. Library unionization is not uncommon. Contract negotiations are ongoing, according to Pitt’s Office of Human Resources.