Labor & Employment Law Daily Wrap Up, INDUSTRY NEWS, TRENDS—Nearly one in five World Cup matches reached heat levels flagged by players’ union, (Jul 21, 2026)

By Patricia K. Ruiz, J.D.

Previously, global players’ union FIFPRO warned FIFA of the dangers of heat stress and calendar congestion.

Nearly one in five matches at the 2026 FIFA World Cup were played in heat conditions that the global players’ union FIFPRO considers high risk, according to an analysis by The Guardian. The findings come after FIFPRO had warned that heat stress and calendar congestion posed significant risks to player welfare at the expanded competition. They also echo concerns outlined in a May open letter to FIFA from medical, public health and climate experts urging the governing body to adopt stricter heat-management protocols.

World Cup heat findings. The analysis, published July 16, found that almost 20 percent of World Cup matches reached heat levels that exceeded thresholds identified by FIFPRO as requiring stronger intervention to protect players. The analysis focused on wet bulb globe temperature (WBGT), a measure that combines temperature, humidity, sunlight and wind to assess heat stress on the human body, reporting that a substantial number of matches were staged at heat levels that fell within ranges FIFPRO has characterized as dangerous or requiring enhanced mitigation measures.

The findings also emerge amid broader disputes over player welfare between FIFPRO and FIFA. In its workload monitoring efforts, FIFPRO has warned that expanding competitions and compressed recovery periods are increasing physical and mental demands on elite players. The union has described the interaction between congested schedules and extreme heat as a significant challenge for the game.

FIFPRO’s pre-tournament warnings. The findings align with warnings contained in FIFPRO’s player workload monitoring work and related reporting prior to the tournament. FIFPRO identified extreme heat as a growing occupational risk in professional football and warned that several host cities for the 2026 World Cup fell within categories considered at elevated risk for heat illness. The union also pointed to examples from recent competitions in the United States where matches were played in temperatures above its recommended safety threshold.

According to the reported FIFPRO recommendations, a WBGT of 26C should trigger cooling breaks, while temperatures exceeding 28C should prompt consideration of delaying or postponing fixtures. FIFPRO has argued that existing safeguards do not adequately address the physiological impacts of extreme heat on elite athletes.

Open letter challenged FIFA guidelines. Heat-related player welfare concerns were raised publicly prior to the tournament in an open letter to FIFA signed by physicians, sports scientists, climate researchers and other experts. The signatories argued that FIFA’s heat-stress guidelines were outdated and insufficiently protective. They maintained that a WBGT threshold of 32C, under which FIFA mandates cooling breaks and leaves suspension decisions to competition organizers, was too high for a sport involving sustained high-intensity exertion.

The letter urged FIFA to adopt the preventive framework developed by FIFPRO. Among other measures, the signatories called for cooling breaks at lower WBGT levels, postponement or delay of matches when WBGT exceeds 28C, longer cooling breaks of at least six minutes, and enhanced cooling equipment in locker rooms.

The experts framed the issue as one of player health and safety as well as organizational duty of care. They wrote that heat risks associated with football competition are foreseeable and measurable and argued that short cooling interventions may be insufficient once environmental heat stress reaches elevated levels. The letter stated that player welfare should remain the “non-negotiable foundation” of football governance and asked FIFA to evaluate and update its guidelines in line with current scientific evidence.

Broader U.S. heat-safety debate. The World Cup heat-safety debate has unfolded against a broader regulatory and legislative debate in the United States over the management of heat-related workplace hazards. In April, Republican senators introduced the Heat Workforce Standards Act of 2026, legislation that would prohibit the Department of Labor from finalizing, implementing or enforcing OSHA’s proposed Heat Injury and Illness Prevention in Outdoor and Indoor Work Settings rule. Supporters of the measure argued that the proposal’s heat-trigger thresholds, acclimatization requirements, mandated rest breaks, and detailed written safety-plan provisions were overly prescriptive and burdensome, while the bill itself would leave existing workplace safety requirements unchanged and instead block OSHA from establishing a heat-specific federal standard.

At roughly the same time, OSHA issued revised instructions for its National Emphasis Program on outdoor and indoor heat hazards, extending the initiative’s duration to five years and updating inspection priorities using agency and Bureau of Labor Statistics data from 2022 through 2025. The revised program narrowed programmed inspection priorities to 55 industries deemed high risk, removing 46 industries from the target list while adding 22 others, and included new guidance for evaluating employer heat-illness prevention programs and potential General Duty Clause citations. Although the updated emphasis program reflects OSHA’s continued focus on heat-related hazards through enforcement and compliance initiatives, the Senate bill underscores the continuing disagreement over whether detailed heat-safety standards should be established through federal regulation.

Companies: FIFA; International Federation of Professional Footballers (FIFPRO)

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