Trends in working conditions and health across three cohorts of older workers in 1993, 2003 and 2013: a cross-sequential study.

BACKGROUND: Over the past decades, the number of older workers has increased tremendously. This study examines trends from 1993 to 2013 in physical, cognitive and psychological functioning among three successive cohorts of Dutch older workers. The contribution of the changes in physical and psychosocial work demands and psychosocial work resources to change in functioning is examined. Insight in health of the older working population, and in potential explanatory variables, is relevant in order to reach sustainable employability. METHODS: Data from three cohorts (observations in 1993, 2003 and 2013) of the Longitudinal Aging Study Amsterdam (LASA) were used. Individuals aged 55-65 with a paid job were included (N = 1307). Physical functioning was measured using the Timed Chair Stand Test, cognitive functioning by a Coding Task and psychological functioning by the positive affect scale from the CES-D. Working conditions were deduced from a general population job exposure matrix. Linear and logistic regression analyses were performed. RESULTS: From 1993 to 2013, time needed to perform the Timed Chair Stand Test increased with 1.3 s (95%CI = 0.89-1.71), to a mean of 11.5 s. Coding Task scores increased with 1.7 points (95%CI = 0.81-2.59), to a mean of 31 points. The proportion of workers with low positive affect increased non-significantly from 15 to 20% (p = 0.088). Only the improvement in cognitive functioning was associated with the change in working conditions. The observed decrease of physically demanding jobs and increase of jobs with higher psychosocial resources explained 8% of the improvement. CONCLUSIONS: Changes in working conditions may not contribute to improved physical and psychological functioning, but do contribute to improved cognitive functioning to some extent. Further adjustment of physical work demands and psychosocial work resources may help to reach sustainable employability of older workers.

Risk factors for musculoskeletal symptoms and ensuing health care use and sick leave.

STUDY DESIGN: Longitudinal study with a 6-month follow-up. OBJECTIVE: To investigate whether demographic, work-related physical and psychosocial risk factors involved in the occurrence of musculoskeletal symptoms also determine subsequent health care use and sick leave. SUMMARY OF BACKGROUND DATA: Preventing the socioeconomic consequences of disability from musculoskeletal symptoms may be a goal separate from that of eliminating the symptoms themselves; thus, other factors may need to be addressed in intervention. METHODS: A questionnaire provided data on demographics and work-related factors, musculoskeletal symptoms, and ensuing health care use and sick leave among 407 industrial workers. RESULTS: The 12-month prevalence of low back pain (LBP) and neck/upper extremity symptoms was 52% and 56%, respectively. Of those individuals with symptoms at baseline, 68% had a recurrence of LBP, and 62% a recurrence of neck/upper extremity symptoms during a 6-month follow-up. The recurrence of sick leave for a particular musculoskeletal complaint was approximately 30%, while recurrence of health care use was more than 40%. Recurrence of symptoms, health care use, and sick leave were strongly associated with a history of severe symptoms. Physical load, high job strain, and low social support at work determined the occurrence of LBP, related health care use, and sick leave. Older age and living alone were also important risk factors, especially for sick leave. High job strain determined the occurrence of neck/upper extremity symptoms, related health care use, and sick leave. Being female and living alone increased the probability of the occurrence of all 3 endpoints, especially the occurrence of sick leave. CONCLUSIONS: Work-related factors that were associated with the occurrence of musculoskeletal symptoms were quite similar to those associated with health care use and sick leave. However, for LBP, older age and living alone, and, for neck/upper extremity symptoms, living alone and being female more strongly determined whether subjects with these complaints took sick leave. These results imply that prevention strategies aimed at minimizing the risks of the occurrence of work-related musculoskeletal symptoms and prevention programs aimed at reducing sick leave may need to emphasize different sets of risk factors.

Health problems lead to considerable productivity loss at work among workers with high physical load jobs.

OBJECTIVE: To assess the feasibility and validity of two instruments for the measurement of health-related productivity loss at work. STUDY DESIGN AND SETTING: A cross-sectional study was conducted in two occupational populations with a high prevalence of health problems: industrial workers (n=388) and construction workers (n=182). We collected information on self-reported productivity during the previous 2 weeks and during the last work day with the Health and Labor Questionnaire (HLQ) and the Quantity and Quality instrument (QQ), with added data on job characteristics, general health, presence of musculoskeletal complaints, sick leave, and health-care consumption. For construction workers, we validated self-reported productivity with objective information on daily work output from 19 work site observations. RESULTS: About half the workers with health problems on the last working day reported reduced work productivity (QQ), or 10.7% of all industrial workers and 11.8% of all construction workers, resulting in a mean loss of 2.0 hr/day per worker with reduced work productivity. The proportion of workers with reduced productivity was significantly lower on the HLQ: 5.3% of industrial workers and 6.5% of construction workers. Reduced work productivity on the HLQ and the QQ was significantly associated with musculoskeletal complaints, worse physical, mental and general health, and recent absenteeism. The QQ and HLQ questionnaires demonstrated poor agreement on the reporting of reduced productivity. Self-reported productivity on the QQ correlated significantly with objective work output (r=.48). CONCLUSION: Health problems may lead to considerable sickness presenteeism. The QQ measurement instrument is better understandable, and more feasible for jobs with low opportunities for catching up on backlogs.

Impact of musculoskeletal co-morbidity of neck and upper extremities on healthcare utilisation and sickness absence for low back pain.

AIMS: To describe the presence of musculoskeletal co-morbidity of the neck and upper extremities among industrial workers with low back pain, and to examine whether it has an impact on healthcare utilisation and sickness absence for low back pain. METHODS: A self administered questionnaire was used to collect data from 505 industrial workers (response 86%). RESULTS: The 12 month prevalence of low back pain was 50%. Among subjects with low back pain the 12 month prevalence of musculoskeletal co-morbidity of the neck and upper extremities was 68%. Among workers with low back pain, subjects with high pain intensity or disabling low back pain were more likely to have musculoskeletal co-morbidity. In comparison to the subjects who report back pain only, subjects with co-morbidity showed worse general health and health related quality of life. No impact of upper extremity co-morbidity was found on healthcare utilisation, and sickness absence due to low back pain. CONCLUSIONS: This study provides no evidence that musculoskeletal co-morbidity of the neck and upper extremities influences the choice to seek care or take sick leave due to low back pain among industrial manual workers. For occupational health practitioners the finding of a high co-morbidity is important to consider when implementing workplace interventions aimed at the reduction of specific musculoskeletal complaints, since the controls for one musculoskeletal complaint may impact adversely on another musculoskeletal complaint. Researchers who perform low back pain intervention studies using generic health measures, should take into account the impact of musculoskeletal co-morbidity on these measures.

Patterns of care for low back pain in a working population.

STUDY DESIGN: A prospective longitudinal study with 1-year follow-up. SUMMARY OF BACKGROUND DATA: Little is known about the consequences of having back pain and the patterns underlying the decisions to use medical care. OBJECTIVES: The aim of this study is to describe care utilization for low back pain (LBP) and to investigate which factors determine use of care for LBP. METHODS: We used a self-administered questionnaire to collect data on individual, health-related, and work-related factors and the type of medical care sought among 529 employees of nursing homes and homes for the elderly in the Netherlands. Logistic regression models were used to present associations between aforementioned factors and care utilization for LBP. RESULTS: A large proportion of the working population was afflicted with LBP, and only one third sought care. Individuals who use care had more intense pain, chronic pain, and functional limitations. Patients' characteristics varied among the different type of health care providers. Well-known work-related risk factors for the occurrence of LBP did not determine use of care for workers with LBP. CONCLUSIONS: Care utilization due to LBP was associated with severity and nature of back pain. Patients' characteristics vary among the different type of health care providers, but work-relatedness of LBP seems similar across all providers.

Different risk factors for musculoskeletal complaints and musculoskeletal sickness absence.

OBJECTIVES: The aim of this study was to investigate whether individual, work-related physical and psychosocial risk factors involved in the occurrence of musculoskeletal complaints also determine musculoskeletal sickness absence. METHODS: This cross-sectional study used a self-administered questionnaire to collect data on individual and work-related risk factors and the occurrence of musculoskeletal complaints and musculoskeletal sickness absence among 373 employees of laundry-works and dry-cleaning establishments (response rate 87%). Logistic regression models were used to determine associations between risk factors and the occurrence of musculoskeletal complaints and sickness absence due to these complaints. RESULTS: Both work-related physical and psychosocial factors showed strong associations with low-back pain and upper-extremity complaints. Work-related physical factors did not influence sickness absence, whereas psychosocial factors showed some associations with sickness absence. Sickness absence was associated with The Netherlands as the country of birth [odds ratio (OR) 0.3, 95% confidence interval (95% CI) 0.2-0.6], and female workers had an episode of sickness absence due to low-back pain less often (OR 0.5, 95% CI 0.3-0.9), but more often due to upper-extremity complaints (OR 2.2, 95% CI 1.14.5). CONCLUSIONS: Work-related physical and psychosocial factors largely determine the occurrence of low-back pain and upper-extremity complaints, whereas individual factors predominantly determine whether persons with these musculoskeletal complaints take sick leave.