can`t define status to file taxes

I don`t know what tax form should my husband file. So, he works at the car service ( tinting car windows). He is payed daily at the end of the day ( sum depends on how many clients he has served). Now we need to file taxes and i don`t understand how... his boss doesn`t pay taxes for him, no insurance and so on. He doesn`t provide 1099 form also... is my husband sole proprietor? self employed? contractor?

Help me please define my husband`s status and how to file taxes in his case.

I have W2 form and its super easy