Legally, the factory has free training for employees, and there are regulations. Where special training fees are provided for employees in addition to the training fees prescribed by the state to provide professional and technical training for employees, an agreement may be concluded with employees to stipulate the service period. If the laborer violates the service period agreement, he shall pay liquidated damages to the employer in accordance with the agreement. The amount of liquidated damages for violating the service period shall not exceed the training expenses provided by the employer.

The following are the legal provisions.

Article 22 of the Labor Contract Law of People's Republic of China (PRC), if an employer provides professional and technical training for employees and provides special training fees in addition to the employee training fees prescribed by the state, it may conclude an agreement with employees to stipulate the service period. If the laborer violates the service period agreement, he shall pay liquidated damages to the employer in accordance with the agreement. The amount of liquidated damages for violating the service period shall not exceed the training expenses provided by the employer. In case of breach of contract, the liquidated damages paid by the laborer shall not exceed the training expenses that should be shared for the unfulfilled part of the service period. If the service period agreed between the employer and the employee is long, the employer shall increase the remuneration of the employee during the service period according to the wage adjustment mechanism.