Any "jobless" population should try to find a job. They will do that in the service industry. So any planet will see an increase in people working in service industry, if you don't provide them with jobs in your manufacturing of "military assets". But of course you will increase your production over time, which then will lead to a demand for jobs. If there are more people in the service industry than in default Aurora, people will begin to leave their service jobs and join your "asset production" (because you pay way better than those lousy service companies, of course). Once the numbers working in service is down to Aurora default, no more people will come working for you (hey, at some point service is needed and people prefer to keep their living standards - as well as certain amount of people don't like the military industrial complex).
I would love to see more basegame mechanics like this. Maybe there is a benefit in termins of money income if more people work in services, so the moment you try to get them working for you, you will strangle your money income, so you have to begin building financial centers, allow more trade, etc.