This summer is again bringing record-breaking heat to parts of North America. It's time to remember that outdoor work in the summer sun can lead to heat illness, as can indoor work in spaces that aren’t sufficiently insulated or cooled. It’s also time to consider the possible impacts of local or regional wildfires on workplace air quality. Washington state provides useful benchmarks for these considerations, through rules administered every summer by the Department of Labor & Industries’ (L&I’s) Division of Occupational Safety and Health. The remainder of this note summarizes those requirements.
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