Do you have any proof they offered the differential?
I am a former federal and State prosecutor and now handle criminal defense and personal injury/civil rights cases. Feel free to check out my web site and contact me at (212) 577-9797 or via email at Eric@RothsteinLawNY.com. I was named to the Super Lawyers list as one of the top attorneys in New York for 2012. No more than 5 percent of the lawyers in the state are selected by Super Lawyers. The above answer is for informational purposes only and not meant as legal advice.
Do you have anything in writing regarding night differential? You may want to seek a job that will make you happy.
If this answer is helpful, then please mark the helpful button. If this is the best answer, then please indicate it. Thanks. For further information you should see an attorney and discuss the matter completely. If you are in the New York City area, then you can reach me during normal business hours at 718 329 9500 or www.mynewyorkcitylawyer.com.
Refuse to go to work, but let your boss know why. It's unlikely, but he may finally come up with some cash. Most likely, he will deny that anything definite was promised. So, don't start working until you have the full amount of what you want in your hand.