A robot system includes a robot, a container, a determinator, a motion controller, a torque limitter, and a stirring operation controller. The robot includes a drive source for driving a joint part and an end effector. The determinator determines whether a workpiece capable of being held by the end effector exists among workpieces accommodated within the container. The motion controller controls a motion of the drive source. When the determinator determines that there is no workpiece capable of being held by the end effector, the torque limitter limits a motion torque of the drive source. The stirring operation controller allows the motion controller to perform a stirring operation, by which the workpieces accommodated within the container are stirred by the end effector, in a state where the motion torque is limited by the torque limitter.