"We've had ongoing discussions with Volkswagen and have arrived at a consensus with the company," Casteel said. "Upon Local 42 signing up a meaningful portion of Volkswagen's Chattanooga workforce, we're confident the company will recognize Local 42 by dealing with it as a members' union."
Volkswagen wants to introduce a German-style works council at the plant to represent both salaried and blue-collar workers, but the company's has said it can't do so without the involvement of an independent union.
Volkswagen spokesman Scott Wilson issued a statement saying that the company has "no contract or other formal agreement with UAW on this matter."
"Just like anywhere else in the world, the establishment of a local organization is a matter for the trade union concerned," according to the company.
Republican Gov. Bill Haslam and his staff understand "that there is no agreement between the company and the UAW," spokesman David Smith said in an email.
The union last year said it had signed up a majority of plant workers, but nevertheless lost the contentious vote. UAW organizers blamed the narrow defeat on public statements from GOP politicians warning that a union win could imperil economic incentives for the plant's expansion.
The union filed — but later abandoned — a challenge of the outcome with the National Labor Relations Board.
The turmoil surrounding the labor vote has delayed a Volkswagen decision on whether to build a new midsized SUV in Chattanooga or in Mexico. The new model is seen as key to reviving flagging VW sales in North America.
It's unclear whether Thursday's UAW announcement could affect renewed efforts to negotiate expansion incentives at the plant. The money would have to be approved by the Republican-controlled state Legislature, which is heavily anti-union.
Documents leaked after the union vote revealed that Tennessee had sought to tie a $300 million incentive offer for expanding the plant to what it deemed a "satisfactory" outcome of the labor situation there.
U.S. Sen. Bob Corker, R-Tenn., and a former Chattanooga mayor, was particularly vocal during the union vote, predicting the company would announce an expansion within two weeks of workers rejecting the union. The senator later blamed the UAW appeal — and the resulting delay in certifying the results of the union election — for putting a hold on expansion talks at the plant.
The Chattanooga plant has been seen as the union's best chance to win in the South because other automakers have not been as welcoming to organized labor as with Volkswagen. Labor interests make up half of the supervisory board at VW in Germany, and they have questioned why the Chattanooga plant is the company's only major factory worldwide without formal worker representation.