"Stridsåtgärder på arbetsmarknaden [K2]14 § En förening av arbetstagare samt arbetsgivare och en förening av arbetsgivare har rätt att vidta stridsåtgärder på arbetsmarknaden, om inte annat följer av lag eller avtal. "
It is. Postnord even sent a press release stating the same:
> "PostNord's position in a conflict that we are basically outside of, has been that the right to strike is constitutionally protected and therefore applies over the distribution obligation in the Postal Act," the company writes in a press release. [1]
1: https://www.dn.se/ekonomi/postnord-slar-tillbaka-mot-tesla-i...
Anyone can strike, it is a basic right, but good luck not getting paid. That salary might have been handy for the legal representation after being fired too.
That would be an insane way to escalate the conflict to a level which would bring down the entire force of all the unions combined. They are a huge employer and to even bring up the idea would be regarded infinitely more serious than whatever tiny Tesla is doing.
This is a conflict that PostNord has zero desire to be part of. Their employees are on a perfectly legal strike, they will handle this by the book. All their contracts with their customers already stipulates exactly what can be expected in a force majeure situation such as this, and their union is careful not to disrupt their business more than necessary as that is in their best interest.
Consider a "model factory" where 60 % of employees are union members. A strike is initiated and those 60% go on strike. It is reasonable to expect that production decreases with about 60%. In the PostNord case, the union member relationship is about on that level, and the registration plates probably fit in a small van. Still PostNord cannot see a way to meet their obligations even though there are plenty of employees that can deliver. If a non-union employee refuses, then their strike strike is wild and illegal.
I think the courts will see this, but it will take a while.