Five Turkish trade union federations held a one-day general strike in solidarity with 12,000 Tekel workers on Thursday of last week.
The workers used to be employed by Tekel, the now privatised state alcohol and tobacco company.
The government wants to transfer them to a temporary worker status known as 4C.
The Tekel workers have been camping in the streets of Ankara for over 50 days.
Their struggle forced prime minister Tayyip Erdogan to make some concessions.
The government has set a deadline of the end of February for workers to sign contracts for 4C status. It says that the workers will be dispersed by force after that.
Tens of thousands marched to support the Tekel workers in Istanbul, Ankara and Izmir.
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