Tractor

A tractor comprising:

• a vehicle body;
• a work machine connected to the vehicle body;
• an elevator mechanism configured to move the work machine up and down;
• an electric motor serving as a drive source for the work machine;
• a battery configured to supply electric power to the electric motor;
• an electric leakage detection circuit configured to detect electric leakage in the battery;
• and
• a control device configured to control the elevator mechanism as a target to be controlled, wherein:
• the control device controls the elevator mechanism either in a lowered state or in a raised state, the lowered state being a state where the work machine is placed at a position making contact with a ground, the raised state being a state where the work machine is placed at a position distanced from the ground;
• and
• in a case where the electric leakage detection circuit detects electric leakage in the battery when the elevator mechanism is in the lowered state, the control device performs a state change process of bringing the elevator mechanism into the raised state.