Board Thread:General Discussion/@comment-4044190-20140626160743/@comment-24380060-20140628023156

There should be an item that increases the amount of Zeni you get at a work station.

I'd suggest coffee, as it'll increase the effectiveness of the worker, resulting in getting a higher payment. It should increase the Zeni you get by 1.5x or 2x per hour, and only lasts until you collect Zeni from the station.