Legal analysis: workers may not work more than eight hours a day and no more than forty-four hours a week. Irregular working hours, not no time limit. It is meant to be a system of working hours in which the working hours of workers cannot be limited by a fixed number of hours due to the nature of the work and the limitations of the job duties.

Legal basis: The Labor Contract Law of the People's Republic of China

Article 68 Part-time employment refers to a form of employment in which workers are mainly paid by the hour, and in which the average daily working hours of workers in the same employer generally do not exceed four hours, and the cumulative total of the weekly working hours does not exceed twenty-four hours.

Article 70 The parties to part-time employment shall not agree on a probationary period.