Workers at Energy Australia's Yallourn power station are seeking a safety guarantee from the company before undertaking similar work to that carried out by their workmate who died in an electrical accident earlier this week.
CFMEU Mining and Energy Victorian District Secretary Geoff Dyke said workers were meeting with the company today to discuss their concerns.
Production at the plant may be affected until safety concerns are addressed and the cause of the fatal accident is investigated, said Mr Dyke.
"Our members don't want to perform work if they can't be guaranteed they are safe and the company can't tell them what caused the shocking death of their workmate.
"They should not be pressured into operating equipment they fear is unsafe and potentially deadly."
WorkSafe Victoria has put some restrictions on work at the site, including bans on operating electrical switch gear unless boards are powered down.
Workers are also concerned about the lack of arc flash personal protective equipment, which is in use at other power stations in the area, said Mr Dyke.
"We are seeking a much broader enquiry into the company's safety culture than the technical cause of Monday's accident.
"If the company's approach to safety is found to have been lacking, we need action and accountability to fix it."
