You're talking about the drone requirement? If so yeah you would need to exhaust all job options available to you first before doing a job that one drone has had before.

To help players with drone job requirement, here is a detail list of careers / jobs with expansion packs for your reference:

1- Acrobat (showtime)

2- Actor (late night)

3- Alchemist (supernatural)

4- Angler (ambitions)

5- Architect (ambitions)

6- Art Appraiser: Acquisition (university)

7- Art Appraiser: Appraisal (university)

8- Astronomer: Astrophysicist (into the future)

9- Astronomer: Space Explorer (into the future)

10- Band (late night)

11- Bot Arena: Merchanic (into the future)

12- Bot Arena: Official (into the future)

13- Bot Builder (into the future)

14- Business (base)

15- Criminal: Evil (base)

16- Criminal: Thief (base)

17- Culinary (base)

18- Daycare (generations)

19- Director (late night)

20- Firefighter (ambitions)

21- Fortune Teller: Mystic (supernatural)

22- Fortune Teller: Scam Artist (supernatural)

23- Gardener (ambitions)

24- Ghost Hunter (ambitions)

25- Horseman (pets)

26- Inventor (ambitions)

27- Journalism (base)

28- Law Enforcement: Forensics (base)

29- Law Enforcement: Special Agent (base)

30- Lifeguard (island paradise)

31- Magician (showtime)

32- Medical (base)

33- Military (base)

34- Music: Rock Star (base)

35- Music: Symphonic (base)

36- Nectar Maker (ambitions)

37- Painter (ambitions)

38- Photographer (ambitions)

39- Political (base)

40- Private Investigator (ambitions)

41- Professional Sports (base)

42- Science (base)

43- Scuba Diver (island paradise)

44- Sculptor (ambitions)

45- Singer (showtime)

46- Sports Agent (university)

47- Stylist (ambitions)

48- Teacher (ambitions)

49- Video Game Developer (university)

50- Writer (ambitions)