Dutta revived the almost dying Assam State Transport Department[3] and has received great accolades far and wide for doing so.

After holding various organizational posts at the grassroots level during difficult and adverse times like the Assam Agitation over foreigners issue during the period 1979–1985.

As the PYC President Sri Dutta diligently performed the assigned responsibilities during the crucial period when ULFA was targeting and killing Congressmen.

Dutta who contested and won from Amguri LAC, the traditional anti Congress stronghold was made a Minister in the year 1992 in the Hiteswar Saikia led Government.

In the second term he was initially made the Minister of State holding Independent Charge of the departments of Transport, Municipal Corporation and Guwahati Development.

During the period of 2001–03, he devoted his time to reviving the prestigious Assam State Transport Corporation (ASTC) which was dying and was on the verge of closure.

The success of ASTC and Transport Department was so fructifying that it received national attention and the front-lining States of West Bengal, Bihar, Orissa, Andhra Pradesh, Karnataka and Rajasthan sent official teams to study the success story.

[5] After downsizing of the State Ministry in the year 2004 he was retained as a Minister and was allocated the additional charge of Industry & Commerce.

Another prestigious PSU - Assam Tea Corporation was in the red and it was only after Sri Dutta took charge as its Chairman in February 2005 that the fortunes were gradually revived.

On 13 December 2014, he took charge as the President of Assam Pradesh Congress and remained in this post till his demise.