You questions are replied as under :-
1.After receiving the suspension letter can he approach high court and get stay for suspension...?
Ans :- No. Suspension is appealable before deptt. Consult CDA rules of the PSU.
2.Can he approach high court to conduct a trail enquiry in court instead of compay for fair trail..?
Ans : Certainly and certainly NOT. High court cannot be expected to come down to the level of departmental Inquiry. You can approach Court only if the procedure is violated in Inquiry and you are arbitrarily punished.
3.If company equery found that not guilty....can he file defaming case and compensation....?
Ans : Too early to even think of this. If you keep on declaring this intention to do so then the higher authorities (including those who are or may later be sympathetic to you) have no option but to gang up against you and ensure that you are punished by proving charge and thrown out. None is interested to keep on waiting for one day to be jailed when you are acquitted.
You are badly confused. You are entitled to the services of a serving/retired Govt servant of your choice, subject to provisions of your CDA Rules) to argue for you in the departmental inquiry.
Mr Chandrasehkhar has already advised you that “Your friend should request the company in writing to give him the Discipline and Appeal Regulations and Conduct rules of the company in order to defend himself if charges are made against him. He should take the acknowledgement signature of the appropriate authority receiving that letter and preserve it carefully.”.
I however only add that if company does not give it still no need to rush to High Court just file RTI application. Non-provision of these rules on simple request is evidence of malafide. Even otherwise these rules are notified in Gazetted and available on payment from Govt Press.