Legal Analysis: Foreigners who are engaged in labor services in Singapore, whether full-time or part-time, must apply for a work permit in accordance with the regulations of the Ministry of Manpower. Otherwise, they will violate the regulations on manpower and immigration. Once prosecuted, they will face fines, imprisonment or both, and their permits will be cancelled, deported and prohibited from entering the country. Singapore permanent residents will not be controlled.

Legal basis: Article 415 of the Criminal Law of People's Republic of China (PRC), the staff of state organs responsible for handling entry and exit documents such as passports and visas, knowing that they crossed the border illegally, or the staff of state organs such as border guards and customs, knowing that they were allowed to cross the border illegally, shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention; If the circumstances are serious, they shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years.