The Oilfield Workers Trade Union is calling on T&TEC to evacaute workers from its Port of Spain distribution and Powergen facility.
This following two explosions at the plant in December.
O-W-T-U representative Peter Burke told members of the media there are serious environmental concerns at the site.
He says the building not only has asbestos, but he believes the burnt transformer oil and fire suppressant gas at the building, is a possible threat to workers' health.
According to Burke, T&TEC's management has asked pregnant women to stay away from the site and he believes the request is an acknowledgement that the Powergen facility is unsafe. Mr Burke explains that the OWTU asked T&TEC to relocate the workers since 2009.
But he says the commission has made no effort to protect the health and safety of its employees, even after the explosions occurred right beneath the workers' offices.
The union says to date, no investigation has been conducted into the cause of the explosion at the Port of Spain Powergen plant. Burke is calling for air-quality testing to be done before the workers return to work.