Bidirectional relations between work-related stress, sleep quality and perseverative cognition.

Objective: In this longitudinal two-wave study, bidirectional relations between work-related stress and sleep quality were examined. Moreover, it was investigated whether perseverative cognition is a potential underlying mechanism in this association, related to both work-related stress and sleep quality.

Methods: A randomly selected sample of Dutch employees received an online survey in 2012 and 2013.

Worktime control access, need and use in relation to work-home interference, fatigue, and job motivation.

Objective: Worktime control (WTC) has been suggested as a tool to reduce employees' work-home interference and fatigue and improve job motivation. The purpose of this study was twofold: (i) to examine the prevalence of employees' need for, access to, and use of WTC, as well as the incongruence between need for and access to WTC (ie, mismatch); and (ii) to examine the associations of this mismatch and the use of WTC with employees' work-home interference (WHI), fatigue and job motivation.

Methods: Questionnaire data were collected among a large (N=2420) quasi-representative sample of Dutch employees.

Disentangling longitudinal relations between physical activity, work-related fatigue, and task demands.

Purpose: This longitudinal study examined 'normal', 'reversed', and 'reciprocal' relationships between (1) physical activity and work-related fatigue; and (2) physical activity and task demands. Furthermore, the effects of across-time change in meaningful physical activity groups on levels of employees' work-related fatigue and task demands were studied. These groups were based on employees' compliance with the international physical activity norm.

Burden of Sickness Absence Due to Chronic Disease in the Dutch Workforce from 2007 to 2011.

Introduction: Chronic diseases are associated with productivity loss costs due to sickness absence. It is not always clear, however, which chronic diseases in particular are involved with how many sickness days and associated costs.

Objective: To determine the prevalence, additional days of sickness absence, and associated costs of chronic diseases among the Dutch working population from 2007 to 2011.

Who gets fired, who gets re-hired: the role of workers' contract, age, health, work ability, performance, work satisfaction and employee investments.

Purpose: Many workers have been dismissed in the past few years, either becoming unemployed or finding re-employment. The current study examined whether dismissal and its follow-up for the employee (re-employment versus unemployment) could be predicted from workers' employment contract and age, and their health status, work ability, work performance, work satisfaction and employee investments at baseline.

Methods: Our sample comprised a selection of participants from the Netherlands Working Conditions Survey 2010 who participated in a follow-up questionnaire in 2012 (N = 2,644).

Impact of employment contract changes on workers' quality of working life, job insecurity, health and work-related attitudes.

Objectives: Changes in employment contracts may impact the quality of working life, job insecurity, health and work-related attitudes. We examined the validity of two partly competing theoretical approaches. Based upon a segmentation approach, we expected no change in scores among stable trajectories, whereas upward trajectories were expected to be for the better and downward trajectories to be for the worse (Hypothesis 1).

Employment contracts and health selection: unhealthy employees out and healthy employees in?

Objective: The healthy worker effect implies that healthy workers go "up" in employment status whereas less healthy workers go "down" into precarious temporary employment or unemployment. These hypotheses were tested during an economic recession, by predicting various upward and downward contract trajectories, based on workers' health status, work-related well-being, and work ability.

Methods: Two waves (2008 and 2009) of the Netherlands Working Conditions Cohort Study (N = 7112) were used and logistic regression analyses were performed to test the hypothesis of this study.

Enterprise restructuring and the health of employees: a cohort study.

Objective: To examine the influence of enterprise restructuring on general health and emotional exhaustion, and to investigate which factors explain the relation between restructuring and these outcomes.

Methods: Longitudinal data of the Netherlands Working Conditions Cohort Study were used. At baseline and after 12 months, 9076 employees filled out a questionnaire.

Can labour contract differences in health and work-related attitudes be explained by quality of working life and job insecurity?

Study Aim: We hypothesise that due to a lower quality of working life and higher job insecurity, the health and work-related attitudes of temporary workers may be less positive compared to permanent workers. Therefore, we aimed to (1) examine differences between contract groups (i.e.

Relation between perceived health and sick leave in employees with a chronic illness.

Introduction: To improve work participation in individuals with a chronic illness, insight into the role of work-related factors in the association between health and sick leave is needed. The aim of this study was to gain insight into the contribution of work limitations, work characteristics, and work adjustments to the association between health and sick leave in employees with a chronic illness.

Methods: All employees with a chronic illness, between 15 and 65 years of age (n = 7,748) were selected from The Netherlands Working Conditions Survey.

Productivity loss at work; health-related and work-related factors.

Introduction: Productivity loss is an increasing problem in an aging working population that is decreasing in numbers. The aim of this study is to identify work-related and health-related characteristics associated with productivity loss, due to either sickness absence or reduced performance at work.

Methods: In this cross-sectional study, data of the Netherlands Working Conditions Survey of 2007 were used, which includes a national representative sample of 22,759 employees aged 15 to 64 years.