As the appointment raised questions about the political appointments in a key regulatory institution, Sathe on his part said he would do his job judiciously and there is nothing wrong in "being an RSS man".
Sathe, a lawyer by profession, has been appointed by the central government as a "Part-Time Member of the Securities and Exchange Board of India (Sebi) for a period of three years", as per a Finance Ministry notification.
Sathe had unsuccessfully fought Lok Sabha elections as a BJP candidate in 1989 from Mumbai North-West against Congress' Sunil Dutt.
Defending the appointment, Finance Secretary Rajiv Mehrishi said Sathe is well qualified and a person of high integrity and there is no reason for any controversy.
"He is well qualified to be a part-time member of Sebi. I do not see any reason for controversy and from what we have checked, he has high integrity. We did our own checks before appointing him... He is a leading lawyer," Finance Secretary Rajiv Mehrishi said.