The Union activities are divided into indoor and out-door sports, cultural activities, meeting and debates social service etc. Membership to the Union is compulsory. Principal is the Ex-officio President of the Union. Other office bearers and Class Representatives are elected annually from amongst the student who act under supervision of professors-in-charge of different sections. Students Union election is conducted as per the constitution of the Karimganj College students’ union adopted after DHE's guideline No. PC/HE/ CC, 13/2006/16 dt. 18-09-2006 based on the direction of the Hon’ble Supreme Court.[citation needed]
In 2024, NSUI beat ABVP in colleges student union election. Assam Congress's Bhupen bora had campaigned for NSUI in that election. After defeated by NSUI, ABVP sat on a dharna saying that the result was manipulated and demanded recounting but no such step taken by authorities resulted to boycotting of oath taking ceremony by ABVP.[2]