120,000+ NMWs [Nepali migrant workers] are exposed to various occupational hazards, including excessive heat, and 3–4 workers die each week... the majority of NMWs were found working in high WBGT [wet bulb global temperature] (>31°C) each working day during hot months. The major cause of these deaths was recorded as cardiovascular problems (cardiovascular disease; CVD)... There was a strong correlation between average monthly afternoon heat levels (WBGT) and CVD mortality. It is likely that a large proportion of these CVD deaths during hot months were due to serious heat stroke... As many as 200 of the 571 CVD deaths during 2009–2017 could have been prevented if effective heat protection had been implemented as a part of local occupational health and safety programs... death records for workers dying in hot conditions should be more precise than “cardiac arrest.”