The action, which involves both private and public sector union workers, will affect all transport providers in Europe's second-largest container port as well as Brussels Airport.
Brussels airport is in lockdown for a second day following the deadly bomb attacks on Tuesday and will remain closed to all passenger flights tomorrow.
The movement of people and goods in and around Brussels ground to a halt Tuesday after a series of terror attacks rocked the Belgian capital. Brussels Airport has been shut down, all flights in and out cancelled, and public transportation throughout the city has been put on lockdown, sparking wide reports of gridlock.
Finnish air freight carrier Finnair Cargo has used Route Exchange, an online platform where airports and airlines can exchange data and information regarding potential new routes, to open a new base in Brussels.