[Thor]

You can have a promotion once all the stats are marked as "good" like this:
Position Wage Acc Dex Res Str End Int Rep Exp
Police Recruit $ 100 Good Good Good Good Good Good Good Good

Then you have to click yourself on the next job to be promoted. It's not automatic because there may be some time when you'll want to go down a job or 2 to gain more of this stats instead of that 1.