Tennessee's battle over VW union vote has national implications

Watch the video above to see Yahoo Finance's Aaron Task and Rick Newman discuss the latest news in the Chattanooga Volkswagen union vote.

Autoworkers at the Chattanooga, Tennessee Volkswagen plant will vote on whether to join the United Automobile Workers Union this week, a campaign that has become a surprise political controversy in the state's fourth largest city.

Unionization efforts typically face strong opposition from employers, but in this case VW has remained neutral, with criticism coming mainly from conservative politicians and anti-union third-party groups like National Right to Work, a Koch Brothers-funded group.

At a press conference earlier this week, Tennessee State Senator Bo Watson said, "Should the workers at Volkswagen choose to be represented by the United Auto Workers, then I believe any additional incentives from the citizens of the state of Tennessee for expansion or otherwise will have a very tough time passing the Tennessee Senate," essentially threatening to withhold the $5,000 corporate credit VW receives for each worker and other incentives that are estimated to top $400 million over the next 20 years.

Volkswagen intends to invest $7 billion in North American plants over the next five years but is now considering a move to Mexico; a loss of tax-incentives could push the company to close up shop in the U.S. and move to the other side of the Rio Grande.

If the workers at the VW plant do vote to unionize, they would adopt a German-style works council, the first of its kind in the U.S. Every VW factory worldwide, aside from the Chattanooga plant, has both union representation and a works council—making it an essential part of the VW culture.

Works councils, which are common in VW's home country of Germany, are groups elected by the entire workforce that work with management on problem-solving and contribute to company-wide decision-making. Many German companies consider them to be a key component of high-quality manufacturing businesses. If Chattanooga workers vote not to unionize, they'll be the only group of VW workers without direct say on matters such as the input on factory locations, work hours, vacation days and plant rules.

Tennessee is a right-to-work state, which means that if Volkswagen workers do vote in the UAW, employees will still have the right to decide individually whether to join and financially support the elected union. Still, union membership has been sharply declining in most of the country--even Michigan--so a pro-union vote in Tennessee would signal a bit of a comeback for unions.