Alter TV shareholder Giorgos Kouris filed a suit against protesting employees on Wednesday in a bid to force them to end their sit-in at the station.
Since last week, workers have shut down broadcasts, complaining that they have not been paid for several months and that management at Alter have lied to them about their outstanding salaries.
Kouris claims the employees have resorted to violence and have been preventing the station, which earlier this year filed for protection from creditors, from operating.
Alter is alleged to owe some 400 million euros.
Its managing director Costas Giannikos has been accused of failing to pay 1.4 million euros in value-added tax.