Any fine imposed needs to be in line with the requirements of the Payment of Wages Act. The act states that fines cannot exceed 3% of gross wages. The fines must be on the list of fines approved by the appropriate authority and must be listed or prominently displayed.
So, first, the list of fines must be approved by the labor officer. Then, they must be displayed. I don't think you will get approval from the labor officer for 5S. For safety violations, he will likely approve. I am not sure about procedures.