TORONTO -- Unifor says workers at a third Toronto hotel are joining the labour group after voting by a margin of 90 per cent to leave an American-based union.

The vote by workers at the Toronto Westin Prince hotel follows similar votes this week at two downtown Toronto hotels, the Courtyard Marriott and the Marriott Yorkville.

Workers at several other Greater Toronto hotels will vote on whether to join Unifor for remain with U.S.-based unions over the next two weeks.

Unifor says the American parent union of UNITE HERE Local 75 had placed the local into trusteeship this month in a dispute over the right of the local to set its own course, including in bargaining.

It also removed elected officers and seized the local's assets, according to Unifor.

Workers at the Westin Prince hotel will become members of the newly formed Unifor Local 7575.

"It is truly inspiring to see so many workers in Canada taking a strong stand against the bullying and intimidation tactics we see all too often from American unions," said Unifor president Jerry Dias in a statement.

"The workers are sending a strong message to U.S. unions that workers in Canada will not accept that kind of treatment any longer."