On the Career Tab, you’ll see your Sim’s long-term, Daily Tasks, and ideal Mood. Use this information to earn your Sims Promotions in their Career. Completing long-term Tasks will open your Sim up to a Promotion, but your Sim will need to complete Daily Tasks and go to work in their ideal Mood to earn it.
Promotions come with a variety of benefits. Not only will it make your Sim happy, it’ll also come with an increase in pay and a possible reduction to their hours. Exclusive items will also be unlocked after your Sim has earned certain Promotions.