A grievance's a wrong or hardship suffered, which's the grounds of a complaint. Union labor In a labor union, a grievance's the subject of a complaint filed by an employee to be resolved by procedures provided in the union contract. Such a grievance may arise from an alleged violation of the collective bargaining agreement, or violations of law, such as workplace safety regulations... Ordinarily, unionized workers must ask their operations managers for time during work hours to meet with a shop… (More on Grievance)