TORONTO - The Progressive Conservatives' call to make Ontario a so-called "right-to-work" province is "misguided" and would mean lower salaries and a weaker economy, the Liberals and New Democrats warned Friday.

"It just doesn’t reflect Canadian values," Labour Minister Linda Jeffrey said in an interview.

"I believe it would mean lower wages and reduced buying power, and would have a very serious effect on the economy."

The Conservatives said Ontario currently has what they call "forced unionism," and they want to give people the right to decide whether or not to join the union at their workplace and pay dues.

A right-to-work law would make Ontario a more attractive place for businesses to invest in instead of seeing new companies go to other jurisdictions with more welcoming rules, said deputy PC Leader Christine Elliott.

"What we really need to do is develop a very nimble workforce and that’s what the right to work legislation is intended to do, so that businesses when they need to adapt to changing conditions in the workplace, they have the flexibility to be able to do that," she said.

The Tories said U.S. states that adopted right-to-work laws create more jobs and workers get higher raises, but Elliott struggled when asked if she could point to one such jurisdiction where wages actually went up.

"I don’t think that there’s any situation where Ontario’s exactly the same as other jurisdictions, so I don’t think you can provide that kind of comparison," she said.

The New Democrats called right-to-work laws "wrongheaded," warning such a move would not help Ontario's economy because no one would have any money to spend.

"Driving down wages and turning Ontario into the next Alabama is simply a recipe for more people being squeezed out of the middle class, more hardship, and it will not stimulate the economy because people won’t have any money to spend," said NDP Leader Andrea Horwath.

"I don’t see how the removal of people’s ability to make a decent wage, have decent benefits, be able to retire with dignity, is somehow made more beneficial in a right-to-work state."

The Tories cited a 2012 study from the Pacific Research Institute in San Francisco that showed U.S. states with right-to-work laws saw 11 per cent higher economic growth and 11 per cent higher personal income growth compared with other states.

"The overall issue I believe will result in people earning higher wages because we will have more businesses locating here, they will do well and be able to hire more people and pay higher wages," said Elliott.

"But if we have a situation where they’re unable to move and respond to international demands and conditions, then we’re never going to be able to compete with the rest of the world in attracting those businesses to Ontario."

Jeffrey said one of her "worst days as minister of labour" came last February, when U.S. heavy equipment giant Caterpillar closed the Electro-Motive plant in London, Ont., and relocated to Indiana — a right-to-work state — after workers refused to accept a 55 per cent cut in wages and benefits.

After Michigan became the 24th U.S. state to pass a right-to-work law Monday, President Barrack Obama said it wasn't about the economy.

"These so-called right-to-work laws, they don't have anything to do with economics, they have everything to do with politics," Obama told cheering workers in Lansing, Mich.

"What they're really talking about is giving you the right to work for less money.''

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  • Protesters Hold Signs Outside Of Michigan Capitol

    LANSING, MI, - DECEMBER 11: Union members from around the country rally at the Michigan State Capitol to protest a vote on Right-to-Work legislation December 11, 2012 in Lansing, Michigan. Republicans control the Michigan House of Representatives, and Michigan Gov. Rick Snyder has said he will sign the bill if it is passed. The new law would make requiring financial support of a union as a condition of employment illegal. (Photo by Bill Pugliano/Getty Images)

  • Protesters Flood Lansing

    LANSING, MI, - DECEMBER 11: Union members from around the country rally at the Michigan State Capitol to protest a vote on Right-to-Work legislation December 11, 2012 in Lansing, Michigan. Republicans control the Michigan House of Representatives, and Michigan Gov. Rick Snyder has said he will sign the bill if it is passed. The new law would make requiring financial support of a union as a condition of employment illegal. (Photo by Bill Pugliano/Getty Images)

  • Protesters Flood The Capitol

    Protesters gather for a rally at the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Protesters gather for a rally at the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • A protester walks past Michigan State Police at the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Sheet metal workers from Toledo escort an inflatable rat during a march to the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. (AP Photo/Carlos Osorio)

  • Thousands of supporters rally at the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. (AP Photo/Carlos Osorio)

  • Union members Brian Brissette, of Auburn, Mich., from left, Tom Gazley, of Romeo, Mich., and Eric Kozlow, of Warren, Mich., watch the Michigan House of Representatives vote on a television in the at the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Michigan State Police surround a man who was allegedly knocked off his segway scooter by a sheriff deputy on horseback during a rally on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. (AP Photo/Carlos Osorio)

  • Protesters gather for a rally in the rotunda at the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Thousands of supporter march to the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. (AP Photo/Carlos Osorio)

  • Michigan State Police stand guard at an entrance to the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. (AP Photo/Carlos Osorio)

  • Protesters gather for a rally in the rotunda at the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Protesters gather for a rally outside the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • RIGHT TO WORK

    Map locating all U.S. states with right-to-work laws.

  • Tuesday Protests

    People begin gathering outside on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012 to protest right-to-work legislation that was passed by the state legislature last week. Michigan will become the 24th right-to-work state, banning requirements that nonunion employees pay unions for negotiating contracts and other services. (AP Photo/Carlos Osorio)

  • Right to Work Michigan

    A protester holds a sign addressed to Michigan Governor Rick Snyder, who refers to himself as "one tough nerd."

  • State Police Brace For Protesters

    Michigan State Police cruisers line the pedestrian walkway west of the state Capitol in Lansing, Mich., Monday, Dec. 10, 2012. Lansing authorities were bracing for an onslaught of protesters Tuesday. They increased police presence and planned road closings and parking restrictions around the Capitol for the planned protests against the Michigan legislature's right-to-work proposals which passed last week. (AP Photo/Carlos Osorio)

  • Right to Work Protesters

    United Auto Workers protest right to work.

  • Tuesday Protesters

    Thousands of protesters gather for a rally on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. Michigan will become the 24th right-to-work state, banning requirements that nonunion employees pay unions for negotiating contracts and other services. (AP Photo/Carlos Osorio)

  • Michigan Nurses

    About a dozen members of the Michigan Nurses Association stand on the state Capitol steps in Lansing, Mich., Monday, Dec. 10, 2012, protesting right-to-work legislation. Organizers say the gathering was meant to symbolize the silencing of unions that nurses say will happen should the legislation become law.(AP Photo/Carlos Osorio)

  • Silenced

    Debbie Nault from the Michigan Nurses Association stands with other members of the association on the state Capitol steps in Lansing, Mich., Monday, Dec. 10, 2012, protesting right-to-work legislation. Organizers say the gathering was meant to symbolize the silencing of unions that nurses say will happen should the legislation become law.(AP Photo/Carlos Osorio)

  • Longtime Nurse Protests

    Linda Erspamer a veteran nurse of more than 30 years at Sparrow Hospital in Lansing, stands with other dozen members of the Michigan Nurses Association on the state Capitol steps in Lansing, Mich., Monday, Dec. 10, 2012, protesting right-to-work legislation. Organizers say the gathering was meant to symbolize the silencing of unions that nurses say will happen should the legislation become law.(AP Photo/Carlos Osorio)

  • Thousands Gather

    Thousands of protesters gather for a rally on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. Michigan will become the 24th right-to-work state, banning requirements that nonunion employees pay unions for negotiating contracts and other services. (AP Photo/Carlos Osorio)

  • Blocking RTW Banner

    Protesters stand and block a right-to-work banner on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation that was passed by the state legislature last week. Michigan will become the 24th right-to-work state, banning requirements that nonunion employees pay unions for negotiating contracts and other services. (AP Photo/Carlos Osorio)

  • Holding The Flag

    A protester holds an American flag at a rally on the State Capitol grounds in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Protesters In The Capitol

    Protesters gather for a rally in the State Capitol rotunda in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Capitol Filled

    Union workers fill the entire of the Capitol rotunda in Lansing, Mich., Thursday, Dec. 6, 2012. Hundreds of chanting and cheering protesters streamed back into the Michigan Capitol after receiving a court order saying that the building must reopen. The pro-union crowd walked in as lawmakers were debating right-to-work legislation limiting union powers. The Republican-led House subsequently passed the bill with no Democratic support.

  • Led Away

    Protesters are led out of the State Capitol Building in handcuffs after demonstrating against right-to-work legislation inside the Capitol in downtown Lansing, Mich. Thursday, Dec. 6, 2012. Eight people were arrested for resisting and obstructing when they tried to push past two troopers guarding the Senate door, state police Inspector Gene Adamczyk said. The Capitol was temporarily closed because of safety concerns.

  • Handcuffed

    Protesters are led out of the State Capitol Building in handcuffs after demonstrating against right-to-work legislation inside the Capitol in downtown Lansing, Mich. Thursday, Dec. 6, 2012. Eight people were arrested for resisting and obstructing when they tried to push past two troopers guarding the Senate door, state police Inspector Gene Adamczyk said. The Capitol was temporarily closed because of safety concerns.

  • Blocked

    State Police block protesters outside the Senate chamber at the State Capitol Building in downtown Lansing, Mich. Thursday, Dec. 6, 2012. Eight people were arrested for resisting and obstructing when they tried to push past two troopers guarding the Senate door, state police Inspector Gene Adamczyk said. The Capitol was temporarily closed because of safety concerns.

  • Thumbs Down

    David Dudenhoefer, left, a right to work supporter, receives a thumbs down sign from a union worker during a rally in Lansing, Mich., Thursday, Dec. 6, 2012. Tensions rose at the Capitol late Wednesday afternoon when hundreds of union members packed into the rotunda area, blowing whistles and shouting slogans such as "Union buster" and "Right to work has got to go." Senate Republicans introduced right-to-work legislation in the waning days of the legislative session as outnumbered Democrats pledged to resist the proposal and say rushing it through would poison the state's political atmosphere.

  • Fed

    Protesters eat pizza outside the Senate chamber at the State Capitol Building in downtown Lansing, Mich. Thursday, Dec. 6, 2012. So-called right-to-work measures generally prohibit requiring unions from collecting fees from nonunion employees, which opponents say drains unions of money and weakens their ability to bargain for good wages and benefits. Supporters insist it would boost the economy and job creation.

  • Union Workers Rally

    Union workers rally outside the Capitol in Lansing, Mich., Thursday, Dec. 6, 2012 as Senate Republicans introduced right-to-work legislation in the waning days of the legislative session. The outnumbered Democrats pledged to resist the proposal and said rushing it through the legislative system would poison the state's political atmosphere.

  • UAW President Bob King Waits

    United Auto Workers President Bob King waits outside the Capitol in Lansing, Mich., Thursday, Dec. 6, 2012 as Senate Republicans introduced right-to-work legislation in the waning days of the legislative session. The outnumbered Democrats pledged to resist the proposal and said rushing it through the legislative system would poison the state's political atmosphere.

  • Rally Day

    A union steel worker holds up a sign during a rally outside the Capitol in Lansing, Mich., Thursday, Dec. 6, 2012 as Senate Republicans introduced right-to-work legislation in the waning days of the legislative session. The outnumbered Democrats pledged to resist the proposal and said rushing it through the legislative system would poison the state's political atmosphere.

  • Sheet Metal Workers Bring GOP Rats to Protest

    <a href="http://www.huffingtonpost.com/social/Paul_Pimentel"><img style="float:left;padding-right:6px !important;" src="http://graph.facebook.com/1419408869/picture?type=square" /></a><a href="http://www.huffingtonpost.com/social/Paul_Pimentel">Paul Pimentel</a>:<br />Sheet Metal Workers' Local 292 Detroit on RTW Protest 12/11/2012 Lansing, MI show our support Bob Donaldson Business Manager and Journeyman Earl Gray

  • The Welcoming Committee

    <a href="http://www.huffingtonpost.com/social/Concernedwm"><img style="float:left;padding-right:6px !important;" src="http://s.huffpost.com/images/profile/user_placeholder.gif" /></a><a href="http://www.huffingtonpost.com/social/Concernedwm">Concernedwm</a>:<br />Gov. Snyder took theses folks away from protecting the public to intimidate and inhibit the voice of the people. G. Hines

  • Protester Paula Merwin, of Leslie, Mich., stands with an American flag outside the George W. Romney State Building, where Gov. Snyder has an office in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Protester Blake Nance, of Detroit, stands by a line of Michigan State Police guarding the George W. Romney State Building, where Gov. Snyder has an office in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • A man covers his face after getting pepper sprayed during a protest outside the George W. Romney Office Building in Lansing, Mich., Tuesday, Dec. 11, 2012. Thousands of protesters rallied outside the state Capitol as lawmakers pushed final versions of right-to-work legislation. The GOP majority has used its superior numbers and backing from Gov. Rick Snyder to speed the legislation through the House and Senate last week, brushing aside denunciations and walkouts by helpless Democrats and cries of outrage from union activists who swarmed the state Capitol hallways and grounds. (AP Photo/Carlos Osorio)

  • United we Bargain Divided We Beg!

    <a href="http://www.huffingtonpost.com/social/Ryan_Van_Note"><img style="float:left;padding-right:6px !important;" src="http://graph.facebook.com/1640357026/picture?type=square" /></a><a href="http://www.huffingtonpost.com/social/Ryan_Van_Note">Ryan Van Note</a>:<br />Ryan VanNote protesting Right to work in Lansing, MI 12/11/12.

  • A protester rallies in front of Michigan State Police at the George W. Romney State Building, where Gov. Snyder has an office in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Michigan State Police push the crowd back outside the George W. Romney Office Building in Lansing, Mich., Tuesday, Dec. 11, 2012. Thousands of protesters rallied outside the state Capitol as lawmakers pushed final versions of right-to-work legislation. The GOP majority has used its superior numbers and backing from Gov. Rick Snyder to speed the legislation through the House and Senate last week, brushing aside denunciations and walkouts by helpless Democrats and cries of outrage from union activists who swarmed the state Capitol hallways and grounds. (AP Photo/Carlos Osorio)

  • Michigan State Police surround the George W. Romney State Office Building as thousands of protesters rally outside the state Capitol as lawmakers push final versions of right-to-work legislation in Lansing, Mich., Tuesday, Dec. 11, 2012. The GOP majority has used its superior numbers and backing from Gov. Rick Snyder to speed the legislation through the House and Senate last week, brushing aside denunciations and walkouts by helpless Democrats and cries of outrage from union activists who swarmed the state Capitol hallways and grounds. (AP Photo/Carlos Osorio)

  • Protesters sit during a rally at the George W. Romney State Building, where Gov. Snyder has an office in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Michigan State Police push protesters away from the entrance of the George W. Romney State Building, where Gov. Snyder has an office in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Rev. Jesse Jackson, left, and Lansing Mayor Virg Bernero, right, try to enter past Michigan State Police at the George W. Romney State Building, where Gov. Snyder has an office in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Michigan State Police carry a protester from a rally at the George W. Romney State Building, where Gov. Snyder has an office in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)

  • Drew Dobson, of Coleman, Mich., protests at a rally at the State Capitol in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)p

  • Protesters sit during a rally outside the doors of the George W. Romney State Building, where Gov. Snyder has an office in Lansing, Mich., Tuesday, Dec. 11, 2012. The crowd is protesting right-to-work legislation passed last week. Michigan could become the 24th state with a right-to-work law next week. Rules required a five-day wait before the House and Senate vote on each other's bills; lawmakers are scheduled to reconvene Tuesday and Gov. Snyder has pledged to sign the bills into law. (AP Photo/Paul Sancya)