Employment Law Questions? Ask an Employment Lawyer.
Hello and welcome.
No, it's not legal for an employer to deny an employee compensation for hours worked because they failed to turn in training sheets. Your employer can discipline you in other ways, but they cannot withhold wages like this as punishment for not following instructions. If your employer still refuses to you what you earned, you can file a wage claim with the Department of Labor here.
If I can clarify anything at all for you, please do not hesitate to ask. It is my pleasure to assist you further if necessary....