Regarding the documents of domestic workers, the regulations of each city are different, but as a service industry, the most necessary thing for domestic workers is a health certificate, which proves that domestic workers are healthy. If you need to work in a customer's home for a long time, you should provide your ID card to prove your identity when you go to work. Generally speaking, housekeeping has three certificates that must be provided, namely, ID card, health certificate and employment certificate. Then sign the contract.