Mechanic-in-Charge. The classification of Mechanic-in-Charge shall be necessary whenever a Mechanic is in charge of three (3) or more employees. He shall not have the power to hire, fire or impose disciplinary measures. When a Mechanic is in charge of eight (8) or more employees, he shall not be required to use the tools nor shall he be assigned a Helper. To be a Mechanic-in-Charge he must, firstly, be a Mechanic and the selection of which Mechanic shall be in charge is at the sole discretion of the Employer.