I've got a bunch of sims that moved in but they are all unemployed, and I was wondering if there were a way to force sims to get jobs? I don't want everyone to join the police career just because my sim happens to work there. Which seems to happen without Nraas. I want sims in different jobs, and I want them to fit their personalities, rather than just to fill the fact that I am in career x. Or sim b is in career y. Is this possible with Nraas?

Mostly. Nraas Story Progression combines "personality", randomnes and skills while selecting a job for a non playables. At the Nraas chatterbox you shall find more detailed answers.