The nationwide day of action over new pension reforms will cause largescale disruption as many teachers, bus, airport and rail staff have registered to strike.

“A large number of flights will have to be cancelled or rescheduled,” a spokesperson for Brussels airport, Ihsane Chioua Lekhli, told Belga News Agency on Friday. Many children may also have to stay at home as 20,000 teachers have said they will strike, meaning some parents or carers will also have to stay at home.