Figures released this week show the SNCB carried 253 million passengers in 2019, an increase of 11% over three years.
The rail operator said the growth came both from commuter travel and leisure.
After record year SNCB is looking to hire 1,800 staff.
A new nationwide recruitment campaign is about to begin, with the SNCB looking for 470 new drivers, 240 guards and station managers.
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