Do Hong Kong employers apply for mainland workers to check credit information?

In this case, you won't check the credit.

According to the Basic Law of the People's Republic of China (PRC) Special Administrative Region, the Region may formulate labour laws and policies on its own.

In Hong Kong, both employers and employees have relatively perfect and mature labor relations and laws and regulations. In the employment relationship, employers usually decide whether to hire employees according to their personal ability and experience, rather than by inquiring about credit information.