It depends on what kind of situation new employees sign instead of old employees. Generally speaking, don't sign the old employees, write a small word "Dai" under the name and circle the word "Dai".

The legal representative does not need the authorization of the company and has the right to sign contracts or other documents on behalf of the company. If it is an employee of the company, the head of the road department or the general manager, it must be authorized by the company to sign a contract agreement or other documents. However, in judicial practice, under normal circumstances, as long as the other party has evidence to prove or the company recognizes him as an employee, department head or general manager of the company, the court recognizes the effectiveness of his signature on behalf of the company. If losses are caused to the company, the company will investigate the responsibility of the contractor.