Dear M S Krishnamohan,
Firstly, which Bar council is he under. Also, clarification required is that does he have the Sanad? If yes, then is he currently working in a legal capacity in a pvt ltd? if not then did he give up his Sanad? the reason for the above questions is because the answer will depend on your replies. Also, do keep in mind that as per the Advocates Act, 1961 - if one is employed after obtaining the Sanad, in another field other than legal, which means his designation and profile of job is not legal work at all, then he needs to remove his name from the list of practicing advocates from the particular Bar Council. He can be employed under the payrol in a pvt ltd and be a legal officer (as an example purpose only) and retain the Sanad.