If the modified part is modified after the parties to the contract reach an agreement through consultation, and the modified part of the contract is signed or fingerprinted, the modified part is valid; Otherwise, if the above conditions are not met, the altered part is invalid.

The materials required for handling the labor contract are as follows:

1, original and photocopy of valid certificates such as ID card or passport;

2. Original and photocopy of academic certificate;

3. The original and photocopy of the labor security agreement;

4. Original and photocopy of personal social security card or social security certificate;

5. Original and photocopy of relevant professional qualification certificates;

6. Original and photocopy of work experience certificate.

The process of handling labor contracts generally includes the following steps:

1. negotiation between the two parties: the employer and the employee negotiate to determine the contents of the labor contract, including post, work place, salary, working hours, vacation and other matters;

2. Signing a contract: When both parties reach an agreement on the contents of the labor contract, they need to sign a formal labor contract. The contract shall clearly stipulate the work content, labor remuneration, working hours, rest and vacation, social insurance and other aspects;

3. Registration and filing: According to national regulations, the employer shall file the labor contract, usually at the local labor and social security bureau. Filing can effectively protect the rights and interests of workers, but also avoid some potential risks for enterprises;

4. issue a copy of the labor contract: after the filing is completed, the employer shall issue a copy of the labor contract to the employee. The copy of the labor contract is an important document for laborers to safeguard their legitimate rights and interests, and it is also the basis for exchanges and cooperation between the two sides.

To sum up, both parties should carefully check the contents of the contract when signing the labor contract or changing the agreement, so as to avoid traces of modification or other situations that affect the effectiveness of the contract.

Legal basis:

Article 7 of People's Republic of China (PRC) Labor Contract Law

The employer shall establish a labor relationship with the employee from the date of employment. The employing unit shall establish a roster of employees for future reference.

Article 10

To establish labor relations, a written labor contract shall be concluded. If a labor relationship has been established and a written labor contract has not been concluded at the same time, a written labor contract shall be concluded within one month from the date of employment. If the employer and the employee conclude a labor contract before employment, the labor relationship shall be established from the date of employment.