Anang Pal died after a stone fell on him accidentally and hit his head yesterday at Ajnara builder site in Bisrakh area where he was posted, they said.
The victim was rushed to a nearby nursing home where he was declared dead, police said.
A complaint has been filed by the relatives of the deceased against the construction company's managing director, vice-president, supervisor Anil Kumar and contractor Shah Alam for dereliction of duty.
The relatives alleged that the builder failed to provide the necessary safety measures at the site, police said.