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Prevent Heat Stress Injuries and LiabilityAll employers have a legal obligation to safeguard their workers against the risks of heat stress. This article will explain where the obligation comes from and how to comply with it. Heat Stress and the Law OSHA doesnt have a specific standard on heat stress hazards. But it has cited employers for exposing employees to excessively hot work environments under the General Duty Clause (section 5(a)(1) of the OSH Act) which requires employers to keep the workplace free of recognized hazards that cause or are likely to cause death or serious physical harm. A hazard is considered recognized if the employer actually recognizes the hazard or the hazard is generally recognized by the employers industry. Quite frankly, it would be difficult to argue that excessive heat is not a recognized hazard. One example of a case in which an employer was cited for a heat hazard under the General Duty Clause is Duriron Co. v. Secretary of Labor, 750 F.2d 28 (6th Cir. 1984). The court in that case found that the efforts the employer had made to reduce heat stress was evidence that it actually recognized the hazard. 5 Guidelines One lesson of the Duriron case is that the precautions you take to guard employees against heat hazards must be adequate. Half-hearted measures are the worst of both worlds: They show you recognized the danger but they dont do enough to prevent it. Here are some guidelines to keep in mind when implementing heat-stress prevention measures at your workplace: 1. Cut Employees Some Slack When Working in High Temperatures Make sure that supervisors and employees understand that drinking water in hot temperatures is not slacking off. Employees should be allowed to drink as much as they want as often as they want. You should also let new employees or employees returning to work after an extended absence (3 days or more) get acclimated to the high temperatures in the workplace before driving them to maximum physical exertion. 2. Provide Drinkable Water Keep in mind that OSHA requires employers to provide potable (drinkable and cold) water in certain workplaces (see, for example, 29 CFR 1910.141(b) and 1926.65(n)). 3. Implement Engineering Controls Make sure work areas are adequately ventilated. Consider the physical conditions in the workplace, such as ambient air temperature, radiant heat, air movement, high humidity, etc. In order to adequately measure the heat-related conditions in the workplace, you should be familiar with the various sampling methods (e.g. body temperature measurements, environmental measurements, wet bulb globe temperature index (WBGT), and portable heat stress monitors). 4. Consider Physiological Factors Take into account all of the factors that can cause heat stress on the human body, such as an employees age, weight, physical fitness, medical conditions and any past heat-related injuries. This will help you identify which employees are most susceptible. 5. Educate Employees Train employees how to identify the symptoms of heat stress both in themselves
and others. Describe the different forms of heat illness, such as heat
stroke, heat exhaustion, heat cramps, heat collapse, heat rashes and heat
fatigue, and the appropriate first aid measures to provide in response
to each.
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