How long does it usually take to get my passport back?

First, correct a concept. The' tourist passport' you mentioned should actually be a tourist visa.

Since you are going to work, you should apply for a work visa, not a visit visa. The duration of visiting relatives depends on the duration of applying for a visa, which is divided into three months and six months. You can apply for a visit visa of 1 year under special circumstances. When applying, it is also divided into multiple round trips or single round trips. Visa duration and visa restrictions require you to ask the agent who handles your visa.

By the way, in many areas, visiting relatives is not allowed to work. In other words, visiting relatives is not a job. If you work, if you are found by the immigration authorities, you will be sent back to your country, and you will probably never be able to go to that country again because you have been dishonest when applying for a visa.