Legal analysis: participating in pre-job training can be considered as establishing labor relations. Laborers have the right to receive vocational skills training. Pre-job training is the right of workers and the obligation of employers. Training is a form of employment and an integral part of enterprise employment.

Legal basis: Article 10 of the Labor Contract Law of People's Republic of China (PRC) establishes labor relations, and 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.