For receptionist sidejob you need to beat boss of level 1, buy "Repair Visitor Center" and "Receptionist Outfit" edicts then go to reception area and talk to the guard working as receptionist there.
For waitress sidejob you need to beat boss of level 1, buy "Repair Bar" and "Waitress Outfit" edicts then go to bar area and talk to the barmen working there.
For gloryhole sidejob you need to beat boss of level 2, buy "Fix Middle Stall" edict then go to the toilet area there.
For stripper sidejob you need to beat boss of level 3, buy "Build Strip Club" edict then go to strip club are and talk to level 3's boss there.