Heat stress at work: the midday break, the first-week problem, and the risk that isn't in the forecast
Nine in ten worker heat exposures happen outside a declared heatwave, and almost half of heat deaths fall on someone's first day. A sourced guide to WBGT thresholds, the acclimatisation gap, the Gulf midday break rules, and what a 12:30–15:00 ban doesn't cover.









