More additional information that might be worth knowing especially for American friends.

Sweden (like many other countries) engages in sectoral bargaining where trade unions or labor unions make a collective agreement that covers all companies in the sector. Trade unions form confederations demarcated by occupation and they negotiate with their counterpart employer organisations to get deals that cover most of the sector. In other words, there are existing labor agreements from multiple sectors that cover millions of workers.

Tesla has the bargaining power is fly shit against unions and confederations that represent 80-90 percent of the Swedish workforce.