RT Journal Article SR Electronic T1 Extreme heat and work injuries in Kuwait’s hot summers JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 347 OP 352 DO 10.1136/oemed-2022-108697 VO 80 IS 6 A1 Alahmad, Barrak A1 Al-Hemoud, Ali A1 Al-Bouwarthan, Mohammed A1 Khraishah, Haitham A1 Kamel, Mohamed A1 Akrouf, Qassem A1 Wegman, David H A1 Bernstein, Aaron S A1 Koutrakis, Petros YR 2023 UL http://oem.bmj.com/content/80/6/347.abstract AB Background Hot, desert Gulf countries are host to millions of migrant workers doing outdoor jobs such as construction and hospitality. The Gulf countries apply a summertime ban on midday work to protect workers from extreme heat, although without clear evidence of effectiveness. We assessed the risk of occupational injuries associated with extreme hot temperatures during the summertime ban on midday work in Kuwait.Methods We collected daily occupational injuries in the summer months that are reported to the Ministry of Health’s Occupational Health Department for 5 years from 2015 to 2019. We fitted generalised additive models with a quasi-Poisson distribution in a time series design. A 7-day moving average of daily temperature was modelled with penalised splines adjusted for relative humidity, time trend and day of the week.Results During the summertime ban, the daily average temperature was 39.4°C (±1.8°C). There were 7.2, 7.6 and 9.4 reported injuries per day in the summer months of June, July and August, respectively. Compared with the 10th percentile of summer temperatures in Kuwait (37.0°C), the average day with a temperature of 39.4°C increased the relative risk of injury to 1.44 (95% CI 1.34 to 1.53). Similarly, temperatures of 40°C and 41°C were associated with relative risks of 1.48 (95% CI 1.39 to 1.59) and 1.44 (95% CI 1.27 to 1.63), respectively. At the 90th percentile (42°C), the risks levelled off (relative risk 1.21; 95% CI 0.93 to 1.57).Conclusion We found substantial increases in the risk of occupational injury from extremely hot temperatures despite the ban on midday work policy in Kuwait. ‘Calendar-based’ regulations may be inadequate to provide occupational heat protections, especially for migrant workers.Data are available from the corresponding author on reasonable request.