Provided is a cab in which an engine stop switch can be caused to make an emergency stop and an improper operation of the engine stop switch can be suppressed. The cab includes an operator's seat placed in the cab and the engine stop switch for causing the engine to make an emergency stop. The operator's seat includes a back portion serving as a backrest. The engine stop switch is provided rearward relative to a perpendicular line which is perpendicular to a midline bisecting the operator's seat as seen in a plan view and passes the back portion.