Ballpoint pens can be used to sign contracts. The law does not stipulate that contracts signed with ballpoint pens are invalid, but the handwriting of ballpoint pens is easy to change with time and difficult to save. In practice, it is recommended to use a pen or signature pen.

The contract concluded by the parties shall be the result of the true intention expressed by both parties. Normally, a contract is established when both parties sign, seal or press their handprints, and takes effect when it is established according to law, unless otherwise stipulated by law or agreed by the parties.

Legal objectivity:

Article 16 of People's Republic of China (PRC) Labor Contract Law * * * A labor contract shall come into effect after the employer and the employee reach an agreement through consultation and sign or seal the text of the labor contract. The text of the labor contract is held by the employer and the employee respectively. Article 17 of the Labor Contract Law of People's Republic of China (PRC) shall have the following provisions: (1) the name, domicile and legal representative or principal responsible person of the employing unit; (2) The name and address of the laborer and the number of the resident identity card or other valid identity documents; (3) The term of the labor contract; (4) Work content and work place; (five) working hours and rest and vacation; (6) Labor remuneration; (7) Social insurance; (eight) labor protection, working conditions and occupational hazard protection; (nine) other matters that should be included in the labor contract as stipulated by laws and regulations. In addition to the necessary provisions stipulated in the preceding paragraph, the employer and the employee may agree on probation, training, confidentiality, supplementary insurance and welfare benefits.