The deceased was identified as Sohrab, 55, a worker of mechanical department in Platinum Jute Mills.
He died at the hospital around 7:30am, said that Khalilur Rahman, joint convenor of Jute Mill Collective Bargaining Association (CBA) and Non-CBA.
Sohrab fell sick during the strike and was admitted to Monisha clinic. After recovery he joined his work on Saturday, he said.
He fell sick again around 6:30 am today and was rushed to the hospital where he died, he added.
Earlier, Abdur Sattar, 55, a worker of Platinum Jute Mills, died at Khulna Medical College Hospital on Thursday.
An estimated 50,000 workers of Star, Platinum, Crescent, Alim, Eastern, Daulatpur and Khalishpur jute mills in Khulna and JJI and Carpeting jute mills in Jashore went on hunger strike until death on December 10 to press home their 11-point demand.
Workers suspended their indefinite hunger strike for three days and joined work, following a meeting with State Minister for Labour and Employment Munnujan Sufian early Saturday .
Their demands include implementation of the wage commission, payment of regular wages, cancellation of public-private ownership of mills and allotting necessary fund for the jute sector.