"Due to the 48-hour strike announced by the railway workers' unions, all Hellenic Train services are suspended for Saturday, March 4, and Sunday, March 5," the company said in a statement.
On Tuesday, a passenger train collided with a freight train near the city of Larissa.
The passenger train had switched to the freight train's lane before the accident, which brought them both on the same track and resulted in a head-on collision.