Venezuelan opposition leader Juan Guaidó has called for an escalating series of strikes to force President Nicolás Maduro to relinquish power.
Guaidó urged public employees to act on Thursday, saying the stoppages would lead to a general strike.
A woman was killed in clashes between protesters and security forces in Caracas on Wednesday.
Maduro meanwhile dismissed suggestions he had been ready to flee and accused the US of directing a coup.
Tensions over the crisis are also rising between the US and Russia.
US Secretary of State Mike Pompeo said the US could take military action to resolve the crisis and accused Russia and Cuba of destabilising the country through their support for Maduro.
Russian Foreign Minister Sergei Lavrov told Pompeo that America’s influence over Venezuela was destructive and a violation of international law.
Via BBC
