Did you install the ts4script file? Do you have scripts enabled in your game settings?
684 is waaaaay higher than both the vanilla game and my mod. The normal hourly rate is 406 and with my mod the hourly rate is 471. With a 41% bonus from a Distinguished Economics Honors Degree, that would bring the rate up to only 664. Your Sim is doing quite well for themselves, and they either have a number of other bonuses already active, or benefits from a different mod.