Category Archives: Health and Wellness

Shift work and hypertension: Prevalence and analysis of disease pathways in a German car-manufacturing company

Johan Ohlander, M.Sc. and Katja Radon, M.Sc., Ph.D., Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital Munich, Ziemssenstrasse 1, Munich, Germany; and Mekail-Cem Keskin, M.D. and Joachim Stork, M.D., AUDI Gesundheitszentrum Süd, AUDI AG, Ingolstadt, Germany

Hypertension and cardiovascular disease (CVD) may share a similar pathophysiology. Despite shift workers’ CVD excess risk, studies on shift work and hypertension are inconclusive. Blood pressure and shift status for 25,343 auto workers were obtained from medical checkups and company registers. Cross-sectional associations modelling the total effect from shift work (dayshifts, shift work without nights, rotating shift work with nights and nightshifts) on hypertension were assessed. By sequential adjustments, the influence of behavioural, psychosocial and physiological factors on the total effect was examined, with subsequent mediation and moderation analyses. Adjusted for confounders, shift work without nights (vs. day shifts) was significantly associated with hypertension (OR 1.15, 95 per cent CI 1.02-1.30). The total effect was mediated by BMI, physical inactivity and sleep disorders. No moderation of the total effect by behaviours was found. The association between shift work and hypertension seems mainly attributable to behavioural mechanisms.

Am J Ind Med, Volume 58, Issue 5, pages 549-560. Correspondence to: Johan Ohlander, Occupational and Environmental Epidemiology and NetTeaching Unit, Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital Munich, Ziemssenstrasse 1, 80336 Munich, Germany; email: johan.ohlander@med.uni-muenchen.de.

Sociotechnical attributes of safe and unsafe work systems

Brian M. Kleiner, Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia; Lawrence J. Hettinger and Yuang-Hsiang Huang, Center for Behavioral Sciences, Liberty Mutual Research Institute for Safety, Hopkinton, Massachusetts; David M. DeJoy, Department of Health Promotion and Behavior, University of Georgia, Athens, Georgia; and Peter E.D. Love, Department of Civil Engineering, Curtin University, Perth, Australia

Theoretical and practical approaches to safety based on sociotechnical systems principles place heavy emphasis on the intersections between social-organizational and technical-work process factors. Within this perspective, work system design emphasizes factors such as the joint optimization of social and technical processes, a focus on reliable human-system performance and safety metrics as design and analysis criteria, the maintenance of a realistic and consistent set of safety objectives and policies and regular access to the expertise and input of workers. The authors discuss three current approaches to the analysis and design of complex sociotechnical systems: human-systems integration, macroergonomics and safety climate. Each approach emphasizes key sociotechnical systems themes, and each prescribes a more holistic perspective on work systems than do traditional theories and methods. The authors contrasted these perspectives with historical precedents such as system safety and traditional human factors and ergonomics and describe potential future directions for their application in research and practice. The identification of factors that can reliably distinguish between safe and unsafe work systems is an important concern for ergonomists and other safety professionals. This paper presents a variety of sociotechnical systems perspectives on intersections between social-organizational and technology-work process factors as they impact work system analysis, design and operation.

Ergonomics, Volume 58, Issue 4, pages 635-649. Correspondence to: Brian M. Kleiner, Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University, Perry Street, Blacksburg, Virginia 24061; email: bkleiner@vt.edu.

Whole-body Vibration Exposure Intervention among Professional Bus and Truck Drivers: A Laboratory Evaluation of Seat-suspension Designs

Ryan P. Blood, Michael G. Yosta and Janice E. Campa, Department of Environmental and Occupational Health Sciences, School of Public Health, University of Washington, Seattle, Washington; and Randal P. Ching, Department of Mechanical Engineering, University of Washington

Long-term exposure to seated whole-body vibration (WBV) is one of the leading risk factors for the development of low-back disorders. Professional bus and truck drivers are regularly exposed to continuous WBV, since they spend the majority of their working hours driving heavy vehicles. This study measured WBV exposures among professional bus and truck drivers and evaluated the effects of seat-suspension designs using simulated field-collected data on a vibration table. WBV exposures were measured and compared across three different seat designs: 1) an air-ride bus seat; 2) an air-ride truck seat; and 3) an electromagnetically active (EM-active) seat. Air-ride seats use a compressed-air bladder to attenuate vibrations, and they have been in operation throughout the transportation industry for many years. The EM-active seat is a relatively new design that incorporates a microprocessor-controlled actuator to dampen vibration. The vibration table simulated seven WBV exposure scenarios: four segments of vertical vibration and three scenarios that used field-collected driving data on different road surfaces—a city street, a freeway and a section of rough roadway. The field scenarios used tri-axial WBV data that had been collected at the seat pan and at the driver’s sternum, in accordance with ISO 2631-1 and 2631-5. This study found that WBV was significantly greater in the vertical direction (z-axis) than in the lateral directions (x-and y-axes) for each of the three road types and each of the three types of seats. Quantitative comparisons of the results showed that the floor-to-seat-pan transmissibility was significantly lower for the EM-active seat than for either the air-ride bus seat or the air-ride truck seat, across all three road types. This study also demonstrated that seat-suspension designs have a significant effect on the vibrations transmitted to vehicle operators, and the study’s results may prove useful in designing future seat suspensions.

J Occup Environ Hygiene, Volume 12, Issue 6, pages 351-362. Correspondence to: Ryan Blood, Health Sciences, Box 357234, Seattle, Washington 98195; email: rbloodus@uw.edu.

Courthouse closes front office following package

AMHERST, N.S. – Following the receipt of a mysterious package from Hong Kong at the Amherst Justice Centre (AJC), the courthouse shut down its front service counter on the afternoon of May 4. The package was delivered to the front office shortly after 1:00 p.m. that day, according to a press release from the Nova Scotia government’s Department of Justice. Following the delivery, four AJC staff members suffered nausea, dizzy feelings and burning sensations in their throats and were sent to the hospital for examination, the release noted. The Amherst Police have seized the package and are investigating the incident, and the AJC sent all nonessential staff home for the day. The front counter was cleaned thoroughly in the evening. The Department of Justice said that the courthouse would decide on May 5 whether to reopen the front office to the public. The following day, the government said that similar packages had been sent from Asia to four more provincial courthouses, the Truro Supreme Court, Kentville Justice Centre, Bridgewater Justice Centre and the Halifax Law Courts. All four were evacuated, and police are investigating.

“Make Safety a Habit” theme for this year’s NAOSH

NATIONAL – The annual North American Occupational Safety and Health Week (NAOSH) runs from May 3 to 9 this year, and the theme for 2015 is “Make Safety a Habit”. NAOSH, which has run as a continent-wide event every year since 1997, aims to promote the importance of preventing injuries and illnesses at work, at home and in the greater community, according to the official NAOSH website. Organizations across the country are hosting their own safety-themed events as part of the week. The Canadian Society of Safety Engineering (CSSE) is offering the Canadian NAOSH Week Awards to “Motivational Champions” for themed events and activities, based in four categories: 1) most innovative; 2) best new entry; 3) best representation of the “Make Safety a Habit” theme, and 4) best overall event. The CSSE originally created NAOSH in 1986 as Canadian Occupational Health and Safety Week.

Mood Disorders Society launches handbook on mental health in the workplace

The Mood Disorders Society of Canada (MDSC) has published a new handbook for employers on how to deal with mental-health issues in a work environment. Mental Health in the Workplace, launched on April 23 at the Canadian Educators Conference on Mental Health in Ottawa, is now available for free download from the MDSC website, and employers may also request hard copies of the book by e-mailing the organization.

The 33-page handbook is intended as a comprehensive resource for companies that want to create a healthy work environment, according to a press release from the MDSC. It is the result of a survey that the organization – in conjunction with global pharmaceutical company H. Lundbeck A/S – conducted with employers and workers across Canada, asking them about their own perceptions of mental illness, whether they were experiencing it or observing it in colleagues.

“We know that one in five Canadians will have a mental illness or issue each year,” MDSC national executive director Phil Upshall wrote in the handbook’s preface. “We also know that unaddressed mental illness in the workplace cost Canadian businesses more than $20 billion in lost productivity (from absenteeism, presenteeism and turnover) in 2011.”

Upshall added that the handbook was also intended as a guide for employers to spur open discussion and dialogue, develop support programs for workers with mental illness, to help them recover and achieve higher productivity.

Mental Health in the Workplace deals with the following topics:

  • the human cost of not dealing with workplace mental illness;
  • presenteeism, or employees who show up, but perform little work;
  • a step-by-step approach to adopting the National Standard for Psychological Health and Safety, the world’s first mental-health standard of its kind, in a workplace;
  • how to implement a workplace program of psychological health and safety; and
  • six things that smaller organizations can do to create a healthy work environment.

The handbook also includes an appendix that summarizes the results of the Lundbeck/MDSC survey. After polling 1,000 workers and managers between the ages of 16 and 64, the survey found that 79 per cent of workers experiencing depression had never seen a doctor for a diagnosis, 70 per cent of them would not tell their employers about it and 75 per cent continued to work despite depression symptoms.

“Mental illness affects all Canadians,” Upshall wrote. “The overarching message that Mood Disorders Society of Canada wants to convey in all its work is that recovery from mental illness is possible.”

Mental Health in the Workplace can be accessed online or downloaded at http://www.mooddisorderscanada.ca/documents/WorkplaceHealth_En.pdf.

Lost-time injuries stay at record low in Newfoundland

ST. JOHN’S, N.L. – According to the Workplace Health, Safety and Compensation Commission (WHSCC), Newfoundland and Labrador’s workers’ compensation board, the province’s lost-time-injury rate remained at an all-time low for the third straight year in 2014. According to a press release that the WHSCC sent out on April 28, N.L.’s lost-time-incidence rate has reached a plateau of 1.6 per 100 workers. This low is the latest result of a continual decrease from 1989 to 2012, from a high of 5.2. The rate for workers aged between 15 and 24 has also reached a plateau, at 1.5, as has the rate for soft-tissue injuries, at 1.1; the release also claimed that 92.2 per cent of the province’s employers reported no injuries in 2014, a slight improvement from the previous year. “While our ultimate goal would be to not have any workplace injuries [in] our province, the historic low we are currently experiencing is very encouraging,” Sandy Collins, Minister responsible for the WHSCC, said in a press statement. “It is incumbent upon us… to continue to build upon our efforts to date to promote safe work habits and create even more awareness around how to prevent workplace injuries.” The WHSCC also reported that N.L. saw 29 fatalities in 2014, 11 from workplace accidents and 18 from occupational diseases.

Unions protest new Harper budget regarding sick days

The new federal budget proposed by the Conservative government has come under fire from national public-sector unions, who feel that the budget’s plan to create a $1.4 billion surplus comes at the price of the health and safety of federal employees.

Introduced by Treasury Board President Tony Clement on April 21, the budget proposes to replace the current sick-leave system, which gives federal public employees a maximum of 15 paid sick days annually, with a short-term disability plan with only six paid sick days per year. The intention is to save $900 million through the reduced amount of sick days.

The Professional Institute of the Public Service of Canada (PIPSC) and the Canadian Association of Professional Employees (CAPE) are among the organizations that have criticized the Tories’ plan, saying that it could damage labour relations as well as having a negative effect on public employees’ welfare.

“Their plan just doesn’t cut it, quite frankly,” PIPSC vice president Shannon Bittman told COHSN. “What this government is proposing is going to mean that our members will not have the income protection they need when they’re away from the workplace sick.”

Emmanuelle Tremblay, president of CAPE, agreed that federal employees would stand to lose a lot if the proposed plan went into effect.

“The model that they’re proposing, there’s a wait period between the time you start being sick and the time when you can actually have access to short-term disability,” Tremblay explained, saying that the period lasts for seven calendar days.

“So say one part of the year, you have pneumonia, so you’re off from work for two to three weeks, and another part of the year, you just broke an arm and you can’t type, so you can’t be working for another three weeks,” she said. “Let’s say you use five days in your first episode of pneumonia. Then you have one more day left in your sick bank, and maybe you have kind of a stomach flu one day.” With the waiting period, the broken arm would mean either using up a week of vacation days or going without pay before the short-term disability plan kicks in, Tremblay noted.

Bittman speculated that the plan would have a huge effect on public employees’ morale, adding that the government was ignoring more important problems with the system in order to discourage employees from abusing it.

“There are policies in place for those very few cases where there is abuse of sick-leave days, but it’s going to cause costs to skyrocket. It’s going to mean that our members will choose to come into work sick versus foregoing income,” said Bittman. “They’re going to adversely impact virtually each and every one of their employees to fix a so-called problem that really doesn’t exist that much. Because they’re not addressing the toxic workplaces, they’re not addressing the mental-health issues.

“It’s a disaster, and it’s not addressing the gaps that are there.”

Tremblay called the government’s planned surplus “artificial savings,” accusing Clement of misleading the public with accounting that doesn’t add up. “How can they announce the savings ahead of the conclusion of a current round of bargaining?” she asked.

“And there are horror stories that I’ve heard,” Tremblay added, citing examples of workers who had been denied short-term disability coverage when they’d needed chemotherapy treatment or recovery time after a miscarriage. “That kind of horror story tells me we cannot let them steal away not only the banked sick days, but the whole notion of having sick days that are paid sick days.”

PIPSC represents more than 57,000 government employees across Canada, most at the federal level. CAPE was founded in 2003 as a merge of the former Social Science Employees Association and Canadian Union of Professional and Technical Employees.

Shell, CEDA fined for exposing workers to gas

SARNIA, Ont. – A Sarnia court has ordered Shell Canada Limited to pay a fine of $40,000, while Alberta chemical-cleaning company CEDA International Corporation has been fined $50,000, both for an April 26, 2013 incident in which two CEDA workers collapsed in an oil refinery in Corunna, Ont. That day, they were helping to clean heat-exchanger tubes at the Shell refinery, a process that involved placing the tubes into a vat and filling it with a sulfuric-acid solution, according to a press release from the Ontario Ministry of Labour (MOL). Upon adding the solution, employees present noticed a potent smell, and their hydrogen-sulphide (H2S) monitors began sounding. The two workers in question, who were the closest to the vat, got away from it, but still suffered dizziness and disorientation leading to collapse, with one losing consciousness. A subsequent investigation by the MOL revealed that iron sulfide in the tubes had had a chemical reaction to the solution, releasing H2S into the air. In addition, the workers weren’t aware of the possibility of H2S exposure, nor were they wearing proper protective gear. Shell later pleaded guilty to failing to provide information, instruction and supervision to protect workers’ health and safety; CEDA pleaded guilty to failing to notify workers of the risk of H2S exposure. Justice of the Peace Anna Marie Hampson handed down the fines, plus a surcharge, on April 20 of this year.

Quebec study details hazards of wind-energy sector

A recent report by the Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), Quebec’s occupational health and safety board in Montreal, discusses the safety practices and risks in the wind-energy industry, particularly in Quebec, where hundreds of new wind turbines are constructed every year. Wind Energy Sector – Occupational Health and Safety Risks and Accident Prevention Strategies is a 66-page document that’s the first known assessment of oh&s practices for workers in this sector. IRSST researchers Jean-Louis Chaumel, Laurent Giraud and Adrian Ilinca have reviewed the occupational incidents within the industry over the past 15 years and now identify and analyze all the sector’s hazards, while comparing the prevention practices with those that the IRSST recommends. The authors note a variety of health and safety risks, including the mechanics of turbines, electrical hazards, falls from heights and even cardiac risks. The report is available for free download at http://www.irsst.qc.ca/media/documents/PubIRSST/R-858.pdf.