As too many players are making accoutns working, and then deciding to forget about the game, making you have to trim inactive workers daily, we could do something where wages are 0, but a bonus ecual to 2 days worth of wages every 2 days? ANd put advertisements in dashboard or other places.
Wekk yu condnt set regular wages to 0 or a really low number like 1, but you could set it to 30 and 500% bonus every 2 days. Then its like workers are being paid 75 per day making sure workers are constantly working to make sure they actually get the real payment.