Features
While you were sleeping There’s lots of advice on what we work with and where we work, from chemicals to work at heights. But when it comes to when we work, it’s an entirely different matter – and, says Andrew Watterson, for shiftworkers that could be a serious problem. Hazards 106, April-June 2009 • News release
Drop dead It's the thoroughly modern way to die at work. Top occupational diseases of the 21st century will be heart attacks, suicide and strokes. Hazards argues that none of us should be worked into the ground.
Special online briefing, Hazards, 5 August 2003
Worked to death factsheet. Hazards 83, July-September 2003 [pdf format]
Not what we bargained for We have never been more productive, and we are rewarded with temporary contracts, long hours and back breaking workloads. Hazards lists the top 20 questions union reps should ask on workplace change and gives pointers on a better way to work. Hazards 69, January-March 2000 [pdf]
Overwork Fatigue, long hours and pressure of work are causing sudden deaths and burn-out and leaving us in a hazy, half-exhausted world where a breakdown of body and mind is a real and constant threat.
Hazards 49, January-March 1995
Work schedules and hours resources
NIOSH work schedules and long work hours webpages, USA
Plain language about shiftwork ,NIOSH, USA, 1997 [pdf]
Control over work hours and alternative work schedules, AFL-CIO bargaining factsheet, USA [pdf].
The Job Stress Network, USA.
HSE shiftwork webpages, UK
HSE shiftwork good practice guidelines, UK
The development of a fatigue/risk index for shiftworkers, HSE report RR446, HSE, UK.
HSE fatigue calculator, UK [excel file] and guidance document [pdf]
TUC working time webpages
TUC Working Time Myths report, 27 April 2009. [pdf]
Working Time Regulations, BERR website.
National Work Stress Network, UK.
ACTU reasonable hours campaign, Australia.
News
Britain: Union welcomes ship fatigue inspections
The Maritime and Coastguard Agency (MCA) has warned that serious action will be taken against shipping companies found to be cutting staffing levels and flouting hours of rest requirements. The statement from the marine safety body has been welcomed by seafarers’ union Nautilus.
MCA news release • Nautilus news release • Risks 446 • 6 March 2010
Britain: Overwork stress costs worker his job
A university worker who had to work 65 hours a week has received £110,000 in compensation after he had to give up work due to stress. UCU member Mark Bannister, 49, had a history of anxiety and depression and despite complaining about the excessive workload, nothing was done to alleviate the pressure.
UCU news release • Thompsons Solicitors news release • Risks 447 • 13 March 2010
Britain: Unpaid overtime reaches ‘extreme’ levels
The number of people working ‘extreme’ levels of unpaid overtime soared to almost 900,000 last year, with teachers and lawyers the most likely to put in hours of extra work, according to new figures released by the TUC. TUC general secretary Brendan Barber said: “A long hours culture is bad for workers' health and family life - whether the hours are paid or not.”
TUC news release • Work Your Proper Hours Day • UNISON news release • UCU news release • The Guardian • Risks 446 • 6 March 2010
Britain: Shorter hours the key to a better future
A UK think tank has said that shorter working hours will be better for workers and the environment - but only if there is greater pay equity. Despite a recent trend to increased working time the new economics foundation (nef) forecasts a major shift in the length of the formal working week as a consequence of dealing with key economic, social and environmental problems.
Green jobs, safe jobs blog • Risks 444 • 20 February 2010
USA: Long hours linked to deadly gas explosion
Workers in a Connecticut power plant that was rocked by an explosion which killed five people last week were often working more than 80 hours a week, reports say. It is also alleged that workers at the Kleen Energy Systems plant smelled gas less than an hour beforehand and were told to open doors wider for air.
Risks 443 • 13 February 2010
Britain: Over five million worked for free
Over five million workers across the UK gave away £27.4 billion in unpaid overtime in 2009, a TUC analysis of official statistics has found. TUC general secretary Brendan Barber said: “This long hours culture causes stress and damages people's health.”
TUC news release • Work Your Proper Hours Day • The Independent • Personnel Today • Risks 439 • 16 January 2010
Japan: Firm worked employee to death
A restaurant chain in Japan has been accused of working one of its employees to death. The Osaka Central Labour Standards Inspection Office sent an investigation report on local restaurant chain Isoji and its 60-year-old president to the Osaka District Public Prosecutors Office.
Mainichi Japan • Risks 436 • 12 December 2009
Global: Night shifts linked to diabetes risk
Night shifts have been related to cancer and heart disease – and a new study suggests we should also add diabetes to the list of concerns. Michael Smolensky, co-editor of Chronobiology International, said “intelligent development of more health-preserving shift schedules together with efficient health screening and regular check-ups may be of considerable benefit in maintaining the health of this vulnerable group of workers.”
Medical News Today • Personnel Today • Risks 436 • 12 December 2009
Britain: Long commute and long hours at work
Britain’s workers are facing an exhausting “double whammy” of long commutes and long hours at work, new figures have revealed. A TUC analysis of official statistics published this week shows UK workers spend 21.8 million hours travelling to and from work every day.
TUC news release • Commute Smart week • Risks 432 • 14 November 2009
Britain: Driven to exhaustion in vans and buses
The rules governing the working hours of bus, coach and van drivers are so out of date that many drivers have fewer breaks than office workers, the TUC has warned. In an October submission to a Department for Transport review, the TUC said long hours working is a direct cause of driver fatigue, which contributed to one in five road accidents last year.
TUC news release • Risks 429 • 24 October 2009
Britain: Unite guide on shift and night work
The union Unite has issued new guidance on how union reps can organise shift- and nightwork to best protect health. The guide says: “A world increasingly working around the clock raises an issue which is of increasing concern for Unite – the health and safety implications for members who work shifts and at night.”
Shiftwork and nightwork: Unite health and safety briefing [pdf] • Risks 428 • 17 October 2009
Europe: Air crew protest sky high fatigue levels
Long flying hours are “putting lives at risk”, airline crew have warned. European air crew unions say current rules that govern flying hours are unsafe, with fatigue a factor in up to 15 per cent of accidents.
BALPA news release • ITF news release • BBC News Online • Morning Star • Risks 427 • 10 October 2009
Britain: Worker unfairly fired for night shift nap
A Glasgow metal worker who was sacked for nodding off on night shift and missing a fire drill has been awarded £25,374 compensation for unfair dismissal. David Hart, 59, was dismissed for gross misconduct and complained he was unfairly sacked by the Waukesha Bearings factory in Glasgow after a clean 37-year service record.
Daily Record • The Herald • Risks 420 • 22 August 2009
Europe: Victory on working hours for drivers
Europe’s transport unions have won support for safe driving hours. The European Transport Workers’ Federation (ETF) applauded the European Parliament’s decision to reject a proposal on a revised working time directive for road transport.
ITF news report • Risks 407 • 23 May 2009
Britain: Shiftworkers get second class treatment
Shiftworkers in the UK are facing serious health risks but are getting second class safety because the Health and Safety Executive (HSE) clocks off outside normal office hours, according to a new report. Report author Professor Andrew Watterson calls for more HSE resources to be targeted at workers on atypical hours, rigorous enforcement of working time law, an end to the UK opt-out from the working time directive’s 48-hour working week ceiling, and for the UK government to follow the Danish government’s lead and compensate workers with breast cancer caused by long-term night work.
Stirling University news release. While you were sleeping, Hazards magazine, Number 106, 2009 and related working hours webpages • Risks 407 • 23 May 2009
Norway: Rail workers win violence protection
Railway workers in Norway have won improved protection against violence at work, following their unions’ lobbying efforts. Workers represented by Norsk Jernbaneforbund and Norsk Lokomotivmannsforbund won an amendment to existing criminal law after the union engaged the government in talks to improve the plight of railway workers who were experiencing increasing violence, particularly at night.
ITF news report • Risks 406 • 16 May 2009
Australia: Night nurses warn of health fears
For the first time, the life-threatening physical and psychological effects of shift work are being used to push for bigger pay packets for nurses and midwives in New South Wales, Australia. The NSW Nurses Association launched its claim in the Industrial Relations Commission this week, calling in experts to cite studies linking shift work with higher rates of breast cancer, heart disease, miscarriage, clinical depression and divorce.
NSWNA news release • Sydney Morning Herald • Risks 405
Hazards news, 9 May 2009
Britain: Government defends excessive working time
The TUC has criticised the government for its role in frustrating discussions in Europe to end the UK's opt-out from the 48-hour working week ceiling. A conciliation meeting last week between MEPs and employment ministers ended without agreement.
TUC news release • BERR news release • Risks 401
Hazards news, 11 April 2009
Europe: Cancer warning on night work
A top UK occupational health researcher has warned that the UK authorities are lagging behind their Scandinavian counterparts when it comes to action on night work hazards, linked to cancer and other chronic health problems. Stirling University’s Professor Andrew Watterson said the problem was being neither properly recognised nor addressed in the UK.
BBC News Online and The Investigation radio show • The Scotsman • Telegraph • Daily Mail • The Guardian • Risks 398
Hazards news, 21 March 2009
Britain: ‘Robust’ action needed on sea fatigue
Seafarers’ union Nautilus is urging the government to act on an official call for measures to combat seafarer fatigue.
Nautilus news release • MAIB Antari investigation report • Risks 396
Hazards news, 7 March 2009
Britain: Recession brings unpaid work pressures
Around five million workers are doing an average of seven hours and six minutes unpaid overtime a week, according to the TUC. The number of people working unpaid overtime across the workforce has been stable since last year, the union body said, but added the recession was leading to some working longer hours and others struggling for work.
TUC news release and Work Your Proper Hours Day (27 February) advice • Risks 395
Hazards news, 28 February 2009
Britain: Unions welcome EU working time action
Trade unions have welcomed December’s decisive vote by the European Parliament to end the UK's opt-out from Europe's 48 hour average working week. To demonstrate the consequences of excessive working hours, GMB published a dossier of recent public and workplace deaths linked to overwork.
GMB news release and dossier • UCATT news release • PCS news release • Risks 388
Hazards news, 10 January 2009
Britain: TUC warning on unpaid overtime
More than five million people worked unpaid overtime in 2008, bringing its total value across the UK to a record £26.9 billion, according to a new analysis of official statistics published by the TUC. The union body warned a recent trend to shorter hours has been reversed and says the economic downturn could increase the pressure to work for free.
TUC news release • Work Your Proper Hours Day, Friday 27 February 2009 • Risks 388
Hazards news, 10 January 2009
Britain: Rail unions to fight job cuts and zero hours
Rail unions have pledged to fight job cuts and plans to introduce zero hours contracts at the Deutschebahn-owned railfreight company EWS. Condemning the firm’s plan to sack 530 workers, RMT challenged EWS to confirm that there will be no compulsory job losses and that the firm will end the “disgraceful” practice of employing people on zero-hours contracts.
RMT news release • TSSA news release • ASLEF news release • Lloyd’s List • Road Transport • Risks 387
Hazards news, 20 December 2008
Britain: Forty-eight hour opt out must go
Ending the UK’s opt-out from Europe’s 48 hour average working week would cause business little difficulty, the TUC has said. A TUC report published on 15 December, ahead of the vote at the European Parliament on the working hours rule, said the move would also improve the health and safety of long hours workers and reduce the risks of accidents caused by overtired and stressed workers.
TUC news release and report, Ending the opt-outs from the 48 hour week - Easy steps to decent working time [pdf] • NUJ news release • PSI news release • Socialist Group in the European Parliament news release • The Guardian • Risks 387
Hazards news, 20 December 2008
Europe: MEPs vote to end working time opt-out
The European Parliament has voted decisively to end the UK's opt-out from Europe's 48 hour average working week. MEPs voted by 421 to 273 to remove the opt-out from a revised working time directive approved by EU employment ministers in June; the European Parliament will now open negotiations with the Council of Ministers to seek agreement with them on the issue.
TUC news release • Risks 387
Hazards news, 20 December 2008
Europe: MEPS vote to scrap work hours opt-out
The TUC has welcomed a decision by the employment and social affairs committee of the European Parliament to scrap the Working Time Directive opt-out within three years. The amendments proposed by the committee will be the considered at a plenary session at the European Parliament’s December meeting, and will need an absolute major vote to be adopted.
European Parliament news release • TUC news release • ETUC news release • Risks 381
Hazards news, 8 November 2008
Britain: Bank holiday needed to ease stresses
As recession and work worries hit home, workers need a break – and a new bank holiday could be just the job. On 27 October - the halfway point of the longest gap between UK bank holidays - the TUC and the UK's leading voluntary organisations put their case for a new Community Day bank holiday.
TUC news release • Community Day campaign • Why the UK can afford a Community Day [pdf] • Risks 380
Hazards news, 1 November 2008
Britain: Commute times starting to decline
The number of people spending more than one hour per day commuting to work fell by 206,000 in 2007, according to TUC. The TUC analysis of official Labour Force Survey (LFS) figures - produced to coincide with Workwise UK's Commute Smart week, the last week in October - shows a fall of one per cent from 2006 in employees undertaking commuter journeys of longer than one hour.
Work Wise UK news release and Commute Smart Week webpages • TUC news release • Risks 380
Hazards news, 1 November 2008
Britain: Work’s stresses and strains are top concerns
Stress or overwork, injuries and illnesses caused by the poor use of display screen equipment and repetitive strain injuries (RSI) top the list of workers' safety concerns, according to the TUC's biennial survey of safety reps.
TUC news release • Wales TUC news release • Northern TUC news release •TUC biennial survey of safety reps 2008 • Risks 380
Hazards news, 1 November 2008
Britain: Unions reduce long hours burden
UK workers still work the longest hours in Western Europe, but UK unions have been particularly effective in winning shorter hours for their members. A report last week from Eurofound - the European Foundation for the Improvement of Living and Working Conditions - revealed that full-time employees in the UK put in 41.4 hours per week.
Eurofound news release and full report • Risks 373
Hazards, 13 September 2008
Australia: Sleepy shift workers on crash course
Sleep-deprived shift workers are driving themselves to car crashes, trauma surgeons and early graves. While only 14 per cent of Australians are regular shift workers, they make up half the road trauma patients treated at one hospital.
Herald Sun and related story on fatigued ambulance workers.
Risks 272
Hazards news, 6 September 2008
Britain: Overwork and stress are top work concerns
Overwork and stress are the top problems facing workers, according to new TUC research. Its 'What workers want' report is based on an extensive YouGov poll of more than 2,500 people at work in Britain, and identifies safety as both a top three concern and an action priority.
What workers want - an agenda from the workplace, for the workplace, full report [pdf] and poll figures [pdf] • Risks 272
Hazards news, 6 September 2008
Britain: New bank holiday would benefit businesses
Nearly one million UK businesses could benefit from a new bank holiday with workers also benefiting from improved health and well-being, according to a new TUC report. TUC is calling for a ‘Community Day’ bank holiday in late October “to celebrate and encourage volunteering and community activity.”
Community Day campaign • Why the UK can afford a Community Day, TUC report [pdf] • Risks 371
Hazards news, 30 August 2008
Britain: Action needed on hours at sea
Port authorities need to get tough on seafarers’ working hours, the union Nautilus UK has warned.
Risks 364
Hazards news, 12 July 2008
Norway: Overtime causes anxiety and depression
If you work a lot of overtime, especially on a low income or doing heavy manual labour, you're at increased risk of anxiety and depression. Researchers at the University of Bergen in Norway found even moderate overtime hours appears to raise the risk of “mental distress” and said their results support EU-style regulation setting a working hours ceiling.
Elisabeth Kleppa, Bjarte Sanne and Grethe S Tell. Working overtime is associated with anxiety and depression: The Hordaland Health Study, Journal of Occupational and Environmental Medicine, volume 50, number 6, pages 658-666, June 2008 [abstract] • Risks 361
Hazards news, 21 June 2008
Britain: Mixed progress on agency and hours laws
The UK government will keep its opt-out from the European Union’s 48 hour weekly work ceiling, but has agreed a series of improvements to working time rules. The European Trade Union Confederation (ETUC) and the Socialist Group of MEPs in the European Parliament have both said they will challenge the working time compromise.
TUC news release and briefing on changes to working time rules • ETUC news release • Socialist Group of MEPs news release • BERR news release • Risks 360
Hazards news, 14 June 2008
Britain: Unwelcome return of the long hours culture
An extra 180,000 people across the UK are now working more than 48 hours a week, according to a TUC analysis of official statistics. The figures, included in a new TUC report, ‘The return of the long hours culture’, show the number of people working long hours has increased at a faster rate over the last year than the decline in excessive working between 1998 and 2006.
TUC news release and report, The return of the long hours culture [pdf] • Risks 360
Hazards news, 14 June 2008
Japan: Toyota acts on deadly overwork
Toyota is taking steps to deal with a corporate culture that been linked to deaths from overwork. From June, the company is to pay workers overtime for attending out-of-hours ‘kaizen’ or quality control (QC) circle meetings - it previously only allowed workers to claim two hours' overtime a month for such “voluntary” activities.
Asahi Shimbun • BBC News Online • More on karoshi and karojisatsu • Risks 358
Hazards news, 31 May 2008
Britain: Government warning on driver fatigue
One in five of all crashes on major roads are caused by tired drivers but research shows many motorists are ignoring the simplest sign - the common yawn - that it's time for a break. A new government campaign featuring acting star Joseph Fiennes sets out to remind motorists of the dangers of driving when tired – and says it is a particular problem for working drivers.
DfT news release and driver fatigue campaign • Risks 349
Hazards news, 29 March 2008
USA: Long work hours create deadly risks
Prolonged work days that often extend late into the night may cause Americans to fall asleep or feel sleepy at work, drive drowsy and lose interest in sex, according to a Sleep in America poll released by the National Sleep Foundation (NSF). Darrel Drobnich, NSF acting chief executive officer, said: “The impact of not getting good sleep is far reaching and has Americans compromising their productivity, safety, health and relationships – both on the job and at home.”
National Sleep Foundation news release • Risks 346
Hazards news, 8 March 2008
Brazil: Injunction forces hours cut for truckers
A court in Brazil has ruled that companies should limit truckers’ working day to eight hours on safety grounds. The preliminary injunction, which was imposed by prosecutors in Cuiaba in Mato Grasso, applies to transport companies across Brazil and came in response to evidence that trucks are involved in 70 per cent of accidents on Mato Grasso highway and that over half (51 per cent) of truckers passing through Mato Grosso use or have used drugs to stay awake.
ITF news report • Risks 346
Hazards news, 8 March 2008
Britain: Capital drivers push bus firms for hours cut
London's 23,000 bus drivers are demanding a standard wage and safe driving hours across all the city's bus operators. Safety measures in the claim include a maximum of 4 hours and 30 minutes of continuous driving duty before a break, 7 hours and 36 minutes maximum time on duty per day, and a limit of 38 hours per week on duty.
Unite news release • Risks 346
Hazards news, 8 March 2008
Britain: Victory on offshore working time
Unions have hailed a “fantastic” tribunal ruling giving about 10,000 offshore workers two weeks' paid holidays. The decision, affecting drillers, caterers and subsea workers, follows a long-running battle over offshore workers’ rights under the Working Time Regulations.
Risks 345
Hazards news, 1 March 2008
Britain: Firms are not learning long hours lesson
The average British manager works the equivalent of 40 days a year in unpaid overtime, a survey has revealed. The Chartered Management Institute’s (CMI) survey of 1,511 managers found 89 per cent regularly worked more than their contracted hours, with the benefit to industry and commerce 184 million extra days of unpaid effort, but the downside lower morale, poor health and declining productivity.
CMI news release • Risks 344
Hazards news, 23 February 2008
Britain: TUC warning on driving hours review
The government must improve driving time rules for professional drivers, TUC has said. Commenting on the Department for Transport's review of the working time regulations for heavy goods vehicle (HGV) and coach drivers, TUC general secretary Brendan Barber said: “This review has identified substantial abuse of the law,” adding: “This must be addressed as a matter of urgency in order to keep our roads safe.”
TUC news release • ITF news release • Risks 344
Hazards news, 23 February 2008
Britain: Go on, work your proper hours!
Nearly five million people are putting in an average of over seven hours unpaid overtime a week. If they worked all their unpaid overtime at the start of the year, 22 February would be the first day they’d get paid, which is why the TUC have named this date 'Work Your Proper Hours Day'.
TUC news release • Work Your Proper Hours Day, 22 February 2008 • Risks 343
Hazards news, 16 February 2008
Britain: Shiftwork linked early retirement in women
Shiftwork may increase the risk of enforced early retirement among women, suggests new research. Researchers used information from just under 8,000 male and female employees, who were part of the Danish Work Environment Cohort Study, which began in 1990, and data from the national welfare register.
Finn Tüchsen, Karl Bang Christensen, Thomas Lund, and Helene Feveile, A 15 year prospective study of shift work and disability pension, Occupational and Environmental Medicine. Published Online First: 15 January 2008. doi:10.1136/oem.2007.036525 [Abstract] • Risks 339
Hazards news, 19 January 2008
Australia: Action call on shiftwork cancer risk
One of Australia's biggest unions has called for a review of working hours after an International Agency for Research on Cancer study found people who work night shifts have a higher risk of contracting cancer. AWU national health and safety officer, Yossi Berger, said the “frightening report” had confirmed the union's worst fears, and added: “You can earn a lot more money working these shifts but you may find yourself using the money on a designer oxygen tent.”
AWU news release • IARC news release [pdf] • Global union zero cancer campaign • Risks 338
Hazards news,12 January 2008
Britain: Overworked probation officer 'forced out'
An overworked probation officer was forced to sell his house and car as he pursued a three-year legal battle to prove he was a victim of discrimination. Now an employment tribunal has ruled that Steven Collingwood, 38, of Carlisle, did suffer disability discrimination and harassment after a nervous breakdown was brought on by overwork in November 2004.
News and Star • Worked to death resources • Risks 338
Hazards news,12 January 2008
Britain: Pilots welcome call for fatigue probe
A call for research into the long term effects of fatigue on air crew has been welcomed by pilots’ union BALPA.
BALPA news release • Science and Technology – First report, House of Lords Science and Technology Committee
Hazards news, 22 December 2007
Japan: Court rules man was worked to death
A court in central Japan has ordered the government to pay compensation to a woman who argued that her 30-year-old husband died from overwork at Toyota Motor Corp, Japan's largest car maker. Hiroko Uchino filed the suit after a local Labour Ministry office rejected applications for workers’ compensation benefits she filed after the death of her husband, Kenichi, said Hiroko Tamaki, a lawyer for the plaintiff.
Japan Times • San Francisco Chronicle • More from Hazards on karoshi and karojisatsu
Hazards news, 8 December 2007
Britain: Long hours working on the rise again
A culture of working long hours is on the rise once more in the UK after a decade of gradual decline, according to figures published this week by the TUC. More than one in eight of the British workforce now work more than 48 hours a week, the maximum allowed under the law unless workers agree to waive that limit - HSE’s enforcement database records just two successful prosecutions for breaches of the 1998 Working Time Regulations.
TUC news release • BBC News Online
Hazards news, 1 December 2007
USA: Work 'the biggest sleep robber'
Time spent at work is the single most important lifestyle factor that impacts on sleep, a new study has reported. US researchers found the more hours you work the less sleep you get.
American Academy of Sleep Medicine news release • Mathias Basner and others. American Time Use Survey: Sleep time and its relationship to waking activities, Sleep, volume 30, issue 9, pages 1,085-1,095, 2007 [abstract]
Hazards news, 8 September 2007
Britain: Civil servants suffer from overwork
Excessive workloads are forcing over half of full-time civil servants to work excessive hours just to keep up, a study has found, with many now working while sick. Research for the union PCS found 45.8 per cent of workers surveyed put in between 40 and 48 hours and concluded 1 in 20 workers was breaking the working time regulations – introduced as a health and safety measure - by working over 49 hours per week.
PCS news release
Hazards news, 25 August 2007
Britain: Workers protest at damaging hours changes
Factory workers held a demonstration outside their workplace on 31 July, angered by plans to introduce “family unfriendly” and potentially unsafe shift patterns. Supported by members of Unite’s TGWU section, workers from the Hilton Food Group plc in Huntingdon protested outside of the premises against the plans to extend their shifts by five hours per day, because they believe the move would have a negative impact on their family life and on workplace safety.
Unite news release • Peterborough Today
Hazards news, 11 August 2007
Britain: Wake-up call on shift work and heart disease
People who are routinely up all night working the late shift are more likely to show stress symptoms linked to deadly heart problems, Dutch researchers report. Investigators discovered more of the shift work group developed 'premature ventricular complexes' (PVC), a condition associated with extra heartbeats and an increased risk of death due to heart disease. Doctors measured changes in heartbeat and variations in heart rate in 49 employees working shifts, including nights, and 22 employees working normal day hours. All the employees were newly in post, and the measurements were taken between one week and two months after starting the new job and again after they had been in post for 12 months. "The incidence of PVC increased significantly in shift workers over the 1-year follow-up, compared with daytime workers," the researchers write in the September issue of the journal Occupational and Environmental Medicine. The study found that nearly half the shift workers experienced an increase in PVCs, while just more than one quarter of day-shift workers saw an increase. The authors suggest that working at night may be a chronic stressor for the body and that the increased frequency of early heartbeat patterns might be a factor in the higher risk of heart disease among shift workers.
Ludovic van Amelsvoort and others. Changes in frequency of premature complexes and heart rate variability related to shift work, Occupational and Environmental Medicine, vol.58, pages 678-81, 2001 [pdf version of technical research paper] • Risks 19
Hazards news, 15 September 2001
For earlier working time news stories, see:
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