There are various types of jobs in Fujian, including daytime work and night work. At work at night, some occupations may not allow employees to use mobile phones, in order to ensure the safety and efficiency of the working environment. The following are some occupations in which mobile phones are not allowed to be used at night:

1. Medical-related occupations: People working in hospitals, emergency centers or other medical institutions need to keep their concentration and attention to ensure the safety of patients and the accuracy of treatment. Therefore, medical personnel at night are generally not allowed to use mobile phones.

2. police and security: police and security personnel need to be alert and pay attention to the surrounding security situation. Using mobile phones may distract them and increase their work risks.

3. catering industry: people who work in restaurants or night market stalls at night need to focus on providing services to guests. They may need to quickly respond to the needs of guests, such as ordering food, placing orders, delivering food, etc., so using mobile phones may interfere with the workflow.

4. Production workers: Workers who work in some night shift production lines usually need to stay focused for a long time and follow strict operating procedures. Using mobile phones may affect the safety and productivity of work.

It should be noted that the specific workplace and occupational regulations in Fujian may be different, and the policies of different enterprises or industries will also be different. Therefore, the specific policy of prohibiting the use of mobile phones may vary depending on the workplace and occupation. It is recommended to consult relevant enterprises or institutions for details.