When I started double-shifting I started keeping track of my hours. I probably should have been doing it all year based on the errors so far. I tell my wife the start time, call her with the time I clock out and she enters in into a spreadsheet. At the end of the week I get a printout of the time report that she compares to her spreadsheet In the last three weeks there have been five days where I had clock time but it was not reflected in that report, all on my own shift. My wife very carefully and in specific detail with dates/times wrote up each incident. I turned it in to my full-time sup today who gave it back to my pt sup to take care of. Well, he was leaving when I took my son in at midnight for his shift and informed me that they can only find one day where I was not paid correctly out of the five incidents I reported. This is almost $600 and they can only find one missing day even with it spelled out with dates/times/hours worked that do not show on the report. At what point do I go higher and/or file a grievance?