Check your pie graph what is the predominant reason for their unhappiness. If it is fatigue, provide shorter commutes for work and entertainment. Also, shift the working policy to "Light" so that they actually have time to use the entertainment facilities. If the main concern is poverty, increase their salaries or provide baseline allowance on top of their salaries or give them a stimulus package. If is health, make sure that your Trash count is less than 5k (would be better if 0) and have lots of medical clinics/hospitals.
Ape Apps, LLC is an independent software development company founded in 2010 by Brandon Stecklein. Over the years, Ape Apps has published over 400 apps and games across various platforms. You can get in touch with Brandon on Twitter or by leaving a post on his wall @bastecklein