The oil refinery contractors, based at the Lindsey refinery in Lincolnshire, walked out on 11 June following the job losses of 51 of their colleagues. Total regarded the walk-out as unofficial and illegal and claims it has been repudiated by trade unions Unite and the GMB.
Last night Total confirmed 900 protesters had been sacked.
A statement said: "Total can confirm, with regret, that our contractors have now started the process of ending the current employment contracts of their workforce on this construction project.
"The main contract company Jacobs and Total have repeatedly sought to encourage the workforce to return to work so proper negotiations can take place. This is in line with the union and industry agree process that negotiations over illegal strikes cannot commence until the workforce has returned to work. It is frustrating and disappointing these attempts have failed."
Despite Total announcing those affected have the right to reapply for their jobs, trade unions have reacted with anger.
GMB general secretary Paul Kenny said: "GMB condemns the action of Total. Total has for a full week refused to meet the union to resolve the problems through ACAS. It seems pretty obvious that there is a mass case of victimisation taking place here. Locking out the workforce at Lindsey will not solve the problem. It will escalate it."
Total sacks 900 workers over unofficial strike action
Oil giant Total has dismissed almost 900 construction workers who took part in unofficial strike action.
