Workers across Greece were set to walk out for a general strike on Thursday of this week.
It will be their second general strike in three weeks.
Both public and private sector union federations called the action against attacks on pensions.
It follows a march last week by thousands of pensioners who would be hit by retroactive cuts.
Prime minister Alexis Tsipras’ left wing party Syriza was hit by a new round of resignations this month.
His friend and long term ally Gavriil Sakellaridis quit as an MP rather than back measures including the pensions cuts and attacks on mortgage debtors.
This left Tsipras with a parliamentary backing of just 153 out of 300 MPs in the last vote on austerity measures imposed by Greece’s creditors.
He is now reliant on cobbling together support from the right wing parties he was elected to get rid of.
He invited leaders of all parties in parliament except the fascist Golden Dawn to a meeting last week to reach agreement on the proposed cuts.
This included the Tory New Democracy party, which is also in crisis.
A poll released last weekend shows that Syriza’s lead has plummeted since an election in September.