Candy Crush developer King's Stockholm-based employees are headed for a walkout after trade unions Unionen and Sveriges Ingenjörer filed a formal strike notice against the Activision Blizzard-owned studio. The action follows King's refusal, first reported by Kotaku, to sign a proposed collective bargaining agreement covering its Swedish workforce.

Under Swedish labor law, a strike notice triggers a mandatory seven-day cooling-off period before industrial action can legally begin. Once that window closes, Unionen and Sveriges Ingenjörer will be cleared to halt operations at King's Stockholm offices. The specific headcount covered by the notice and the exact start date of any walkout were not disclosed in the unions' initial announcement.

What triggered the dispute?

Unionen, Sweden's largest white-collar trade union representing roughly 700,000 members across the private sector, and Sveriges Ingenjörer, the country's primary engineers' union, say King's leadership rejected a collective agreement that would have set baseline terms on compensation, working hours and professional development for staff in Sweden. The proposed deal was tabled last month, according to the unions, but King declined to sign.

Sweden's collective bargaining system covers more than 88% of the workforce, according to figures from the National Mediation Office, and applies to non-union employers in sectors with collective agreements. A refusal to sign typically signals either a dispute over specific clauses or a strategic push for company-specific terms outside the sectoral norm.

Who is affected?

King employs several hundred people in Stockholm, where it has maintained its headquarters since its 2003 founding. The studio's Swedish operations house roles spanning game design, engineering, live operations, marketing and data science for the Candy Crush franchise, which industry analysts estimate generates well over $1 billion in annual bookings.

A work stoppage at that scale would hit the studio's live-service pipeline, where daily content drops, A/B testing and tournament operations require continuous engineering coverage. The longer any action runs, the more it threatens to delay seasonal events, the resolution of outstanding bugs and the rollout of new mechanics under testing.

What is the dispute's broader context?

The Swedish tech and games sector has seen repeated friction with international owners over the past three years. Microsoft completed its $68.7 billion acquisition of Activision Blizzard in October 2023 and inherited King's unionized Stockholm workforce. Since then, union representatives have flagged concerns about cost-cutting initiatives and the use of mandatory return-to-office policies, both of which have surfaced in broader industry labor disputes.

Collective agreements in Sweden typically regulate overtime compensation, severance structures, performance review procedures and protections against algorithmic management. For game developers specifically, they also tend to address crunch periods, overtime pay multipliers and minimum staffing ratios for live operations.

What comes next?

If the cooling-off period expires without a signed deal, the unions will have the legal right to call a strike. Either side can also request mediation through the Swedish National Mediation Office, a step that has historically preceded most large-scale industrial actions in the country.

Studio observers will watch for three signals in the coming days: whether King returns to the negotiating table, whether the unions escalate by extending the action to additional sites, and whether Microsoft intervenes from Redmond to direct its subsidiary's position. The outcome will set a precedent for how the company handles labor relations across its European studios, particularly in Germany, the United Kingdom and Ireland, where unionization is rising.