As far as I know, the law enforcement officers of the industrial and commercial bureau are all civil servants, but the clerks are not necessarily. Of course, your place may be different.

Salary: Clerk is good.

Power: The bailiff has a little more power for the time being.

From a political point of view: a good clerk

Promotion space: there is a lot of room for shop assistants.

The key is whether you have a background or not. If you have no background, go to the procuratorate. Your's social status is not at the same level.