I have ran into this problem a few times. A bunch of buildings with all the workers they need, all workers stay off duty all the time no matter what I do.
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