commercial traveler rule
commercial-traveler rule. Workers’ compensation. The principle that an accident will be treated as occurring during the course of employment if it was caused by an employee whose job requires travel, and the employee was not on a personal errand. • The commercial-traveler rule is an exception to the going-and-coming rule. [Cases: Workers’ Compensation 714–715. C.J.S. Workmen’s Compensation § 428.]