When someone was closed to graduate (I'm talking about colleges and universities because it was in my family) he/she had to went though a special commission in you school who give the young person "card of admission" to the new job. Usually, all the companies (there were only government companies only. I don't remember official private organizations.) give the opportunity of their starting positions (or they have to take just graduated person because government opened that position) to the schools (depends of the school specialization). Of course, if someone already found the place they could bring the request from the organization he/she agreed with.
The exclusion might be only for sick, disabled people, and/or women with the small kids (infants).
And... yes, everyone MUST work (study full time if you are under 35) or be signed for work.