MONTREAL - Quebec Premier Jean Charest is threatening to sue the federal government in a bid to keep 1,800 Aveos Fleet Performance jobs in Montreal.

Charest's comment today came as members of the national assembly unanimously adopted a resolution saying they would do everything they legally could to help the Aveos employees.

About 200 Aveos employees, many in tears, staged a protest outside the national assembly in Quebec City today in their latest attempt to keep their maintenance jobs.

On Tuesday, the Quebec government announced it was considering the possibility of suing Air Canada to ensure maintenance work remains in the country.

Aveos blamed Air Canada for its financial troubles, saying in a court filing that the airline reduced, deferred, and cancelled maintenance work, which resulted in approximately $16 million in lost revenue in less than two months.

Aveos announced last weekend it was shutting down three main plants in Vancouver, Winnipeg and Montreal, as well as other facilities in Edmonton, Calgary, Trenton and Mississauga, Ont.