This really should be in the ideas section but I'll bite.
I don't like the idea because I play the sims as a form of escapism and if I had to apply for and get rejected from jobs in a game I'd enjoy it less because I'd be thinking about how I have to be applying for jobs currently.
What I liked more, as someone else said, was how in previous sims versions the jobs you wanted weren't always available and you'd have to check back the next day for a chance at getting into the job you wanted.