Sajjan left Calcutta during te Second World War and reached Mumbai where he worked as an assistant to the famous director Kidar Sharma.

He also worked as assistant to Gajanan Jagirdar and Vakil Sahib and received Rs.35 as salary.

A poet by heart, Sajjan showed his talent when he wrote dialogues for Meena (1944) and lyrics for Door Chalen (1946) and Dhanyavad (1948).

In the 1950s and 1960s, he acted as hero or side-hero in films such as Saiyan, Rail Ka Dibba, Bahana, Sheesha, Malkin, Nirmohi, Kasturi, Mehmaan, Lagan, Girl School, Paridhaan, 00 Dulhe, Ghar-Ghar Mein Diioali, Haa-Haa-Hee-Hee-Hoo-Hoo, Poonam Jhanjhar and Halla-Gulla.

As hero, his last films were Kabuliwala and Do Chor, and as an artist he last appeared in the 1986 release Shatru with Rajesh Khanna.