Can I join a new company without leaving my job?

You can join a new company without leaving your job.

The functions of the separation certificate are as follows:

1. Proof of resignation: the resignation certificate can prove that the employee has left the original work unit, which is very important for the employee's personal job search, further education and immigration;

2. Prove personal ability: the resignation certificate will describe the employee's work performance and performance in detail, which is of great help to the employee's personal career development and job search;

3. Prove personal morality: the resignation certificate can also prove the performance of employees in the original work unit, including work attitude and professional ethics, which is helpful to improve employees' credibility and reputation in society;

4. Social responsibility certificate: the resignation certificate is also a social responsibility of the employer to the employees, which proves that the employees are qualified employees in the original work unit and helps to maintain the reputation and image of the employer.

The application process of resignation certificate is as follows:

1. Application: Resigned employees need to apply for resignation certificate from the company, which can generally be handled in the Human Resources Department or the Personnel Department;

2. Providing personal information: The resigned employee needs to provide personal information, including name, ID number, job number, resignation date, etc.

3. Payment of fees: Some companies may need to charge certification fees in order to apply for resignation certificates, and employees who leave their jobs need to pay corresponding fees;

4. Waiting for processing: the company will verify according to the information provided by the resigned employees, which generally takes 3-5 working days to review and process;

5. Obtain the certificate of resignation: Employees who have left the company can obtain the certificate of resignation from the Human Resources Department or the Personnel Department within the specified time, and generally need to bring ID cards or work certificates and other relevant certificates.

To sum up, as long as the new unit has no opinion, it is ok to join or not leave. But generally speaking, the new unit will require employees to provide proof of resignation. The new unit requires the parties to issue the resignation certificate of the original unit, mainly in accordance with the provisions of China's labor contract law. If an employing unit employs workers who have not dissolved or terminated their labor contracts with other employing units, thus causing losses to other employing units, it shall be jointly liable for compensation.

Legal basis:

Article 39 of People's Republic of China (PRC) Labor Contract Law

In any of the following circumstances, the employer may terminate the labor contract:

(a) during the probation period, it is proved that it does not meet the employment conditions;

(two) a serious violation of the rules and regulations of the employer;

(three) serious dereliction of duty, corruption, causing great damage to the employer.