I was told that the reason for the warning was that on a certain production day, a product error was committed. I am the lead supervisor and the personnel involved told me what happened and how they planned on correcting the problem. They offered to redo the product to make it better, however, overtime would be needed.
During the conversation the employees offered to work the overtime without payment. I discussed this issue with Administration and Owner and all agreed that it was ok. Two days later I got called from Human Resources telling me that I had made a mistake by letting the personnel work overtime without pay and that I would get a written warning for it because some employees called in saying that it was not fair to not get that overtime pay.
I agreed on certain aspects of the warning, however I also don't think its fair that I received this warning, as I notified Administration and business owner of the situation when it happened and they failed to say that it is incorrect and should not be done. Human resources is blaming me, the supervisor, for that day when I think that I, along with administration, and owner should get it because we all failed to stop production or to say that employees would get paid for their worked overtime. Administration is now saying that I obligated the employees to stay without pay, when I clearly told administration and owner that the employees themselves offered to work to fix that day's production.
Am I the only one who deserves a written warning? I am confused as to why I'm receiving the blame when I informed administration and owner and no one stopped this from happening.
Who is right and what can I do?