The Commission decided to conduct the enquiry after it did not receive responses to its notices, sent based on complaints received by it, to the District Collector and Superintendent of Police of Ernakulam, where the incident took place on April 16, 2014.
"The Commission observed that the concerned functionaries did not render necessary assistance to the bereaved families of the four deceased labourers," an NHRC statement said.
The enquiry has ensured that affirmative action was eventually taken by the concerned state authorities in releasing all the dues to the next of kin of the four labourers, who died of burn injuries sustained after a blast at Seepison Ply Board Factory in Ernakulam district, it said.
The deceased were identified as Dhaneswar Swain, Ashok Kumar Das, Haldhar Das and Sahadev Patra.
The Regional Provident Fund Commissioner informed that after the intervention of the Commission benefits under EPF and EDLI have been extended to all the four deceased labourers and action had been taken to ensure payment of pension to the beneficiaries.