The rail strike impact will be significantly greater on Monday, than over the weekend.
Only two out of five InterCity (IC) trains will run on Monday, the Belgian railway company NMBS announced on Saturday.
The frequency of suburban L- and S-trains will be further reduced, with only one in four trains running.
P-trains, which operate during morning and evening rush hours, will be almost entirely cancelled.
The rail strike began on Friday night at 10:00 PM and is expected to last at least nine days.
NMBS and rail network manager Infrabel have developed alternative schedules based on staff availability. The impact of the strike may vary daily.