I'm having bugs on version 0.51.1.2 with the Strip Club.
There seems no way to hire waitresses and there are conflicts when you hire employees from your chemical firm.
If you have them working both jobs and fire them at your main firm, they remain strippers but are labelled as "unemployed". You then cannot fire them from the stripclub (or rather, you can do the dialogue but they will remain working there).
Removing them first as strippers, then from your main firm and then re-hiring them at the club correctly labels them as strippers in their job description
With cousin Gabrielle the option to hire her at your company breaks her stripper job though. She will turn up on weekends, but attempting to change her back to a normal stripper after firing her from your company is not possible, as there is no further dialogue.
In general I did all these hire and fire shenaningans since there seems to be no way to simply reassign people (e.g. from Stripper to BDSM performer), which would be great to have