The union representing 1,200 people who work at eight Alberta Extendicare seniors facilities may decide to serve 72-hour strike notice after talks scheduled for Friday were cancelled.

The workers, who are members of the Alberta Union of Provincial Employees, could legally go on strike by Monday if notice is served tomorrow morning.

"All options are on the table. The bargaining committee needs to determine what the best strategy is, whether it's one site, all sites, multiple sites," said AUPE president Guy Smith.

"They need to determine that strategy themselves. They know their workforce better than anybody. They know what the mood of their members is like and we need to assess that before we take the next step."

The union says Extendicare pulled out of mediation that was supposed to take place on Wednesday. Last-minute talks scheduled for Friday were also cancelled.

The strike would affect locations are in Edmonton, Calgary, Mayerthorpe, Red Deer, Lethbridge and Athabasca.