heat stress

Regional maps of occupational heat exposure: past, present and potential future

All Authors: 
Hyatt O, Lemke B, Kjellstrom T.
Publication Date: 
2010

Background: An important feature of climate change is increasing human heat exposure in workplaces without cooling systems in tropical and subtropical countries. Detailed gridded heat exposure maps will provide essential information for public health authorities. Objectives: To develop and test methods for calculating occupational heat exposures and present results in easily interpreted maps.

Climate change, workplace heat exposure and occupational health in Central America.

All Authors: 
Kjellstrom T, Crowe J.
Publication Date: 
2011

Climate change is increasing heat exposure in places such as Central America, a tropical region with generally hot/humid conditions. Working people are at particular risk of heat stress because of the intrabody heat production caused by physical labor. This article aims to describe the risks of occupational heat exposure on health and productivity in Central America, and to make tentative estimates of the impact of ongoing climate change on these risks.

Climate change, occupational health and workplace productivity.

All Authors: 
Kjellstrom T.
Publication Date: 
2011

Climate change will increase the average global temperature, but there will be substantial variation in local regions. A variety of potential health impacts have been identified. One issue of emerging concern is high heat exposure in workplaces, both indoors and outdoors. This is already a major problem for people with physically demanding work in places with very hot seasons each year. Heat stress creates physiological change, clinical health effects and lowered work capacity, which for some people reduces their hourly productivity and income. The economic

Workplace heat stress in the context of rising temperature in India.

All Authors: 
Dash SK, Kjellstrom T
Publication Date: 
2011

Heat stress is an important aspect in the lives of people working under exposed conditions for long hours. It is interesting to examine the impact of global warming on the occurrence of heat stress in India. This study uses India Meteorological Department (IMD) daily temperature gridded data to investigate the changes in frequency and episodes of extreme temperature events in seven temperature homogenous regions and the country as a whole by applying the guidelines suggested by the World Meteorological Organization ‘Expert Team on Climate Change Detection and Indices’. It is

Calculating workplace WBGT from meteorological data

All Authors: 
Lemke B, Kjellstrom T
Publication Date: 
2012

The WBGT heat stress index has been well tested under a variety of climatic conditions and quantitative links have been established between WBGT and the work-rest cycles needed to prevent heat stress effects at the workplace. While there are more specific methods based on individual physiological measurements to determine heat strain in an individual worker, the WBGT index is used in international and national standards to specify workplace heat stress risks.

The risk of heat stress to people

All Authors: 
Kjellstrom T, Woodward A, Gohar L, Lowe J, Lemke B, Lines L, Briggs D, Freyberg C, Otto M, Hyatt O (2015) . In: King D, Schrag D, Dadi Z, Ye Q, Ghosh A, Eds.
Publication Date: 
2015

First paragraph of book chapter: The human body has behavioural and physical mechanisms that work to maintain its core temperature at about 37°C. If the body’s internal temperature rises above this level, then body systems and vital physiological functions are compromised, and in severe cases, death can result. The climatic conditions relevant to such heat stress may be measured in terms of the Wet Bulb Globe Temperature (WBGT), which takes account of temperature, humidity, wind speed, and solar radiation.1 We calculate WBGT for in-shade (no

Heat stress causes substantial labour productivity loss in Australia

All Authors: 
Zander KK, Botzen WJW, Oppermann E, Kjellstrom T, Garnett ST
Publication Date: 
2015

Heat stress at the workplace is an occupational health hazard that reduces labour productivity. Assessment of productivity loss resulting from climate change has so far been based on physiological models of heat exposure. These models suggest productivity may decrease by 11–27% by 2080 in hot regions such as Asia and the Caribbean, and globally by up to 20% in hot months by 2050. Using an approach derived from health economics, we describe self-reported estimates of work absenteeism and reductions in work performance caused by heat in Australia during 2013/2014.

Time-motion analysis as a novel approach for evaluating the impact of environmental heat exposure on labor loss in agriculture workers

All Authors: 
Ioannou LG, Tsoutsoubi L, Samoutis G, Kajfez Bogataj L, Kenny GP, Nybo L, Kjellstrom T, Flouris AD
Publication Date: 
2017

Introduction: In this study we (i) introduced time-motion analysis for assessing the impact of workplace heat on the work shift time spent doing labor (WTL) of grape-picking workers, (ii) examined whether seasonal environmental differences can influence their WTL, and (iii) investigated whether their WTL can be assessed by monitoring productivity or the vineyard manager's estimate of WTL. Methods: Seven grape-picking workers were assessed during the summer and/or autumn via video throughout four work shifts.

Climate conditions, workplace heat and occupational health in South-East Asia in the context of climate change

All Authors: 
Kjellstrom T, Lemke B, Otto M
Publication Date: 
2017

Occupational health is particularly affected by high heat exposures in workplaces, which will be an increasing problem as climate change progresses. People working in jobs of moderate or heavy work intensity in hot environments are at particular risk, owing to exposure to high environmental heat and internal heat production. This heat needs to be released to protect health, and such release is difficult or impossible at high temperatures and high air humidity. A range of clinical health effects can occur, and the heat-related physical