Kirti Kumar Mehta, 59, allegedly raped the woman at a city hotel on Friday evening.
The Elgin resident had reportedly threatened the woman, who works at a pub and came from Delhi looking for better job opportunities, and forced himself on her.
The incident happened at around 8 pm.
As per Kolkata Police, Mehta met the victim at her workplace where he had often visited.
The victim had filed her complaint with the Bhowanipore Police Station.