Greek Public Power Corporation (PPC) employees refused to call off strike action which was launched against the government pension reform plan.
The action has caused power cuts throughout the Greece.
SBS World News reports that Government spokesman Theodoros Roussopoulos said on Friday there were no plans to force striking PPC employees to return to work through a "civil mobilization," such as that used to end a strike by dock workers that had cut off communication with the Greek islands in previous years.