a work device mounted on a machine main body;

a plurality of actuators that drive the machine main body and the work device;

a location information acquiring device that acquires location information that is information relating to a location of the machine main body;

a posture information acquiring device that acquires posture information that is information relating to posture of the work device; and

a controller configured to limit operation of at least one of the plurality of actuators on a basis of a boundary of a work area that is an area in which movement of the machine main body and the work device is permitted, the location information acquired in the location information acquiring device, and the posture information acquired in the posture information acquiring device such that a movement velocity of the machine main body, an extension velocity of the work device, or a swing velocity of the work device becomes lower as the distance between the machine main body or the work device and the boundary of the work area becomes closer,

wherein the controller is configured to, in a case that a change instruction that instructs widen or narrow the boundary of the work area to a boundary of a requested work area is input, judge whether widening or narrowing of the boundary of the work area to the boundary of the requested work area is possible on a basis of the boundary of the work area, the boundary of the requested work area, the location information of the machine main body, and the posture information of the work device, and overwrite the boundary of the work area with the boundary of the requested work area to widen or narrow the boundary of the work area only in a case that it is judged that widening or narrowing is possible, and

wherein the controller is configured to determine whether the work machine is in operation based on the location information of the machine main body and the posture information of the work device, and judge that widening or narrowing of the boundary of the work area is possible in a case of determining that the work machine is not in operation.