The main purpose of the Preventing Revenue Opportunities for Workplace Lockouts and Retaliation Act, also known as the PRO-WORK Act, is to restrict employers' access to federal funds and tax credits while they are engaged in a lock-out of employees. A lock-out occurs when an employer prevents employees from working, typically during labor disputes. The goal of this legislation is to discourage employers from using lock-outs as a tactic against workers by imposing financial penalties.