Generally, it is necessary to sign a labor contract: two years; During this period, if you need to leave your job, you need to go through the normal procedures with the personnel department, otherwise all the consequences will be borne by yourself; If the employer dismisses you during this period, it depends on what the reason is, and the contents of this contract will be explained to you clearly! The unemployment certificate is to prove that you have no labor relationship with other companies and avoid unnecessary disputes! If you apply for Chow Tai Fook and go to other brands, then you should carefully distinguish whether it is legal or not. If there is no problem in all aspects of treatment, you can also consider it!