Shift your work:Towards sustainable employability by implementing new shift systems

Personaliseren van roosters, bijvoorbeeld naar chronotype, van belang bij ploegendiensten bij oudere werknemers. In dit proefschrift is de aanname onderzocht dat werken in ploegendienst zwaarder wordt met toenemende leeftijd en in hoeverre roosters kunnen helpen bij het duurzaam inzetbaar houden van oudere ploegendienstwerknemers. In drie studies is geen consistent bewijs gevonden dat oudere ploegendienstwerknemers meer problemen ervaren met werken in ploegendienst dan jongere werknemers. Andere factoren, zoals het chronotype (de mate van ochtend- of avondmens), bleken beter individuele verschillen in slaap en herstelbehoefte te verklaren dan leeftijd. In drie andere studies is gevonden dat roosters die voldoen aan ergonomische roostercriteria kunnen bijdragen aan de duurzame inzetbaarheid van ploegendienstwerknemers. Het proces voorafgaand aan de implementatie van een nieuw rooster bleek echter minstens even belangrijk als het roosterontwerp zelf over hoe werknemers een nieuw rooster ervaren. Mogelijke verklaringen voor deze resultaten zijn dat alleen de sterksten blijven werken in ploegendiensten en dat collectieve roosters weinig ruimte bieden aan individuele wensen. Met de verhoging van de pensioensleeftijd en het groeiende aantal oudere ploegendienstwerknemers, komen ontziemaatregelen voor oudere ploegendienstwerknemers onder druk te staan. Er is daarom meer onderzoek nodig hoe alle ploegendienstwerknemers inzetbaar te houden tot aan het pensioen. Een interessante strategie om verder te ontwikkelen is het personaliseren van roosters, bijvoorbeeld naar chronotype

The work role functioning questionnaire v2.0 showed consistent factor structure across six working samples

Objective  The Work Role Functioning Questionnaire v2.0 (WRFQ) is an outcome measure linking a persons' health to the ability to meet work demands in the twenty-first century. We aimed to examine the construct validity of the WRFQ in a heterogeneous set of working samples in the Netherlands with mixed clinical conditions and job types to evaluate the comparability of the scale structure.  Methods  Confirmatory factor and multi-group analyses were conducted in six cross-sectional working samples (total N = 2433) to evaluate and compare a five-factor model structure of the WRFQ (work scheduling demands, output demands, physical demands, mental and social demands, and flexibility demands). Model fit indices were calculated based on RMSEA ≤ 0.08 and CFI ≥ 0.95. After fitting the five-factor model, the multidimensional structure of the instrument was evaluated across samples using a second order factor model.  Results  The factor structure was robust across samples and a multi-group model had adequate fit (RMSEA = 0.63, CFI = 0.972). In sample specific analyses, minor modifications were necessary in three samples (final RMSEA 0.055-0.080, final CFI between 0.955 and 0.989). Applying the previous first order specifications, a second order factor model had adequate fit in all samples.  Conclusion  A five-factor model of the WRFQ showed consistent structural validity across samples. A second order factor model showed adequate fit, but the second order factor loadings varied across samples. Therefore subscale scores are recommended to compare across different clinical and working samples

The Work Role Functioning Questionnaire v2.0 Showed Consistent Factor Structure Across Six Working Samples

Objective: The Work Role Functioning Questionnaire v2.0 (WRFQ) is an outcome measure linking a persons' health to the ability to meet work demands in the twenty-first century. We aimed to examine the construct validity of the WRFQ in a heterogeneous set of working samples in the Netherlands with mixed clinical conditions and job types to evaluate the comparability of the scale structure.  Methods: Confirmatory factor and multi-group analyses were conducted in six cross-sectional working samples (total N = 2433) to evaluate and compare a five-factor model structure of the WRFQ (work scheduling demands, output demands, physical demands, mental and social demands, and flexibility demands). Model fit indices were calculated based on RMSEA ≤ 0.08 and CFI ≥ 0.95. After fitting the five-factor model, the multidimensional structure of the instrument was evaluated across samples using a second order factor model.  Results: The factor structure was robust across samples and a multi-group model had adequate fit (RMSEA = 0.63, CFI = 0.972). In sample specific analyses, minor modifications were necessary in three samples (final RMSEA 0.055-0.080, final CFI between 0.955 and 0.989). Applying the previous first order specifications, a second order factor model had adequate fit in all samples.  Conclusion: A five-factor model of the WRFQ showed consistent structural validity across samples. A second order factor model showed adequate fit, but the second order factor loadings varied across samples. Therefore subscale scores are recommended to compare across different clinical and working samples

Seasonal Influenza A (H1N1) Infection in Early Pregnancy and Second Trimester Fetal Demise

A second trimester fetal demise followed influenza-like illness in early pregnancy. Influenza A virus (H1N1) was identified in maternal and fetal tissue, confirming transplacental passage. These findings suggested a causal relationship between early exposure and fetal demise. Management of future influenza outbreaks should include evaluation of products of conception associated with fetal loss

Kestävää energiaa edistämässä: onko institutionaalisesta yrittäjyydestä apua?

Institutional entrepreneurship research has described and conceptualized dramatic cases of successful institutional change. We know less about whether it can help people trying to change institutions, for example, struggling to change the energy system. Do concepts from the institutional entrepreneurship literature offer sustainable energy practitioners insights on the political aspects of their work? And vice-versa: do practitioners have useful insights on the potential and limits of agency in institutional change? The present study contributes to these questions through collaborative inquiry together with government-affiliated organizations with a mission to promote sustainable energy. The results suggest that concepts from the institutional entrepreneurship literature do serve to make practitioners' implicit competencies explicit and hence a legitimate subject for organizational development and joint learning about the political aspects of energy systems change. We conclude that institutional entrepreneurship appears to require a form of organizing that combines environmental scanning, grand strategy and everyday tactical moves on the ground.peerReviewe

The Work Role Functioning Questionnaire v2.0 Showed Consistent Factor Structure Across Six Working Samples

Objective: The Work Role Functioning Questionnaire v2.0 (WRFQ) is an outcome measure linking a persons' health to the ability to meet work demands in the twenty-first century. We aimed to examine the construct validity of the WRFQ in a heterogeneous set of working samples in the Netherlands with mixed clinical conditions and job types to evaluate the comparability of the scale structure.  Methods: Confirmatory factor and multi-group analyses were conducted in six cross-sectional working samples (total N = 2433) to evaluate and compare a five-factor model structure of the WRFQ (work scheduling demands, output demands, physical demands, mental and social demands, and flexibility demands). Model fit indices were calculated based on RMSEA ≤ 0.08 and CFI ≥ 0.95. After fitting the five-factor model, the multidimensional structure of the instrument was evaluated across samples using a second order factor model.  Results: The factor structure was robust across samples and a multi-group model had adequate fit (RMSEA = 0.63, CFI = 0.972). In sample specific analyses, minor modifications were necessary in three samples (final RMSEA 0.055-0.080, final CFI between 0.955 and 0.989). Applying the previous first order specifications, a second order factor model had adequate fit in all samples.  Conclusion: A five-factor model of the WRFQ showed consistent structural validity across samples. A second order factor model showed adequate fit, but the second order factor loadings varied across samples. Therefore subscale scores are recommended to compare across different clinical and working samples