Heat causes employees to make mistakes when they need to be their best.
In a study, NASA measured people just typing. At a temperature of 90 degrees, they made 42% more mistakes than at 80 degrees. At 95 degrees, they did 4x the amount of mistakes than at 80 degrees!
A mistake can be as little as taking an extra few seconds to re-tighten a screw or something potentially dangerous. It is all the little motions that add up.
Cost of Quality is expensive. A 1% increase in defects has shown a correlation to a direct reduction in revenue at a 2:1 ratio.
Keeping employees cool and productive saves you money and improves quality of work.
Heat has been shown to cause cognitive declines in employees causing a slowdown in productivity. According to Forbes, when workers decline in productivity, the organization they are working for is also less productive. Also, people tend to stay home in the heat and are more prone to dehydration and heat stroke.
Heat related injuries and accidents can double in hot summer months and cost more than $50K+ per incident
OSHA describes outdoor heat injuries as being totally preventable. There are occupational risk factors that can cause heat illness including physical activity, extremely hot working conditions, lack of acclimization, and wearing of clothing that is not breathable.
Employers should always protect their workers from the possibility of heat-related illnesses. Without proper protection, employers can be exposed to liabilities and hefty fines.
Replacing Employees costs 15-25% of their annual pay
When it's hot, attrition doubles. During the hottest time of the year, those that sweat more, leave more. At 20% cost of replacement $15/hr the cost of turnover is $520/month.