A Swedish court ruled on Monday that the country’s transport authorities must find a way to send Tesla license plates blocked by postal workers due to a union lockout, Aftonbladet newspaper reported, as cited by Reuters.

The decision came hours after the US electric car maker sued the agency and state-owned company PostNord after postal workers stopped delivering license plates for its new cars.

On November 20, PostNord workers joined a union action to force Tesla to sign a collective agreement for mechanics in Sweden, and the transport agency refused to deliver the plates by other means, saying it was contractually obliged to use PostNord.

However, Norrkoping District Court ruled that the agency must hand over Tesla’s license plates within seven days or pay a fine of 1 million Swedish kroner ($95,000).

“It is right that a decision has been made that justifies Tesla’s request,” Johannes Eriksson, Tesla’s lawyer, told Aftonbladet.

The district court, the transportation agency, Tesla and its attorney did not immediately respond to requests for comment.

The decision is the latest twist in the battle between Tesla and Swedish union groups.

On October 27, the IF Metall union went on strike, refusing to service Tesla cars because the company did not agree to collective bargaining.

Members of other unions, including dockers, electricians and maids, have since taken solidarity action.

Tesla maintains a policy of not signing collective agreements and says its workers have conditions equal to or even better than those demanded by IF Metall.

The union says it is vital to the Swedish labor market model that all companies have collective agreements.

In its legal filing, Tesla called the transportation agency’s decision not to allow it to take license plates a “unique attack on a company operating in Sweden.”

The Seko union, which organized PostNord workers, told Reuters that an easy solution for Tesla would be to sign a collective agreement with IF Metall.