This document provides definitions for over 50 terms related to workers' compensation. Some key terms defined include: - Accident (work-related) - An event arising out of and in the course of employment that results in personal injury to a worker. - Average weekly wage - The wage used to calculate total disability benefit rates, defined as 1/52nd of average annual earnings. - Claim - A request for workers' compensation for a work-connected injury, occupational disease, or death filed using form C-3. - Hearing - A proceeding before a Workers' Compensation Law Judge to determine the rights of parties in a compensation claim.