Officials confirmed a fuel spill on the tarmac at the Pierre Elliott Trudeau Airport in Montreal on Friday evening, where aircraft refuelling workers with Swissport Canada have been on strike since Tuesday.
The company says the accident occurred around 7 p.m. when a tanker truck struck a cement pillar.
Swissport says the vehicle was being operated by a manager who oversees vehicle maintenance and handles such equipment on a regular basis.
The company has been maintaining refuelling services since the strike began.
About 40 litres of fuel was spilled, which both the company and the airport authority described as minor, with two aircrafts delayed by the incident.
The labour disruption by roughly 100 members of the International Association of Machinists and Aerospace Workers began Dec. 31. and includes aircraft refuellers, mechanics, dispatchers and maintenance workers of fuel storage facilities.