As I mentioned earlier, including the said clause is indeed possible, but it must be ensured that the reasons are legally justifiable and valid. Companies in some domains/sectors may face challenges when such clauses are introduced. Usually, such a clause is introduced only for critical positions (in Sales, R&D, etc.)—typically senior-level ones—where the risk of the company losing business or secrets is high if an employee leaves to join a competitor. Implementing this across the board will be tough and impractical. What if employees begin to leave due to this reason—will the management be ready for such a scenario? What is your company involved in?
Also, I don't understand the logic behind getting the 'approval by Government authority'—please elaborate on the reason(s). Why should the government approve or disapprove any appointment letters of a private company, in the first place? As far as I know, there isn't such a mechanism at all.
Regards,
TS