Dear Harmeet,
Appointment Letter without designation is like a zebra without stripes. All these types of wishes of CEO should be laid to rest. Listen, Harmeet all these things can be done on a visiting/business cards and many Companies do it. (I feel he go the idea from seeing a visiting card of one of your clients or some other Company). Appointment letter being a strictly internal and confidential document should not have any effect on business or outsiders and is never shown to anybody and the copies are present with the employee concerned and his personal file which is with HR.
If I was in your place I would tell him to give all employees overtime as per Shops and Establishment Act, and inform him that people can go to Court asking for the same, claiming themselves as workers. If such a thing happens the Company will have nothing to do but suck it's own thumb.
Regards,
SC