Working visas only cover the kind of work that requires a high level of professional knowledge or skills. It is therefore not possible for foreigners to engage in manual/simple labor under a working visa, unless they have the visa granted according to the family status (spouse/child of Japanese national, long term resident, etc.), a trainee visa, or are part-time workers on student or dependent visas.
For example, there are no work visas for hair-dressing, massage therapists, waiter/waitress, salesclerk, construction workers, etc.
The most typical working visas to work in private companies are the following 4 types:
*Engineer / Specialist in Humanities / International Services,