Long-Term Cost-Effectiveness and Return-on-Investment of a Mindfulness-Based Worksite Intervention: Results of a Randomized Controlled Trial
Open accessAbstract
Objectives The aim of this study was to conduct a cost-effectiveness and return-on-investment analysis comparing a mindfulness-based worksite intervention to usual practice. Methods Two hundred fifty-seven governmental research institute employees were randomized to the intervention or control group. Intervention group participants received an eight-week mindfulness training, e-coaching, and supporting elements. Outcomes included work engagement, general vitality, job satisfaction, work ability, and costs. Cost-effectiveness analyses were conducted from the societal and employer's perspective, and a return-on-investment analysis from the employer's perspective. Results After 12 months, a significant but not clinically relevant adverse effect on work engagement was found (-0.19; 95% confidence interval: -0.38 to -0.01). There were no significant differences in job satisfaction, general vitality, work ability, and total costs. Probabilities of cost-effectiveness were low (≤0.25) and the intervention did not have a positive financial return to the employer. Conclusion The intervention was neither cost-saving nor cost-effective. Poor e-coaching compliance might partly explain this result.
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Four different research articles have been included that analyzed distinct cost-effectiveness parameters; however, these studies included different parameters, so no analysis of these factors was performed.
“In this review, four different research articles (Hartfiel et al., 2017; Singh et al., 2016, 2020; van Dongen et al., 2016) have been included that analyzed distinct cost-effectiveness parameters. However, these studies included different parameters, so that no analysis of these factors was performed.”
From Mindfulness-Based and Mindfulness-Informed Interventions at the Workplace: A Systematic Review and Meta-Regression Analysis of RCTs (2023) · cites this paper as van Dongen et al., 2016
Cites
Multiple imputation using chained equations: Issues and guidance for practice
White, I. R., Royston, P., & Wood, A. M. (2011) · Statistics in Medicine · doi:10.1002/sim.4067 · Cited by 9,792 · see citing works
The Measurement of Work Engagement With a Short Questionnaire: A Cross-National Study
Schaufeli, W. B., Bakker, A. B., & Salanova, M. (2006) · Educational and Psychological Measurement · doi:10.1177/0013164405282471 · Cited by 7,403 · see citing works
The effect of mindfulness based therapy on anxiety and depression: A meta analytic review
Hofmann, S. G., Sawyer, A. T., Witt, A. A., & Oh, D. (2010) · Journal of Consulting and Clinical Psychology · doi:10.1037/a0018555 · Cited by 3,846 · see citing works
Salanova, M., Agut, S., & Peiró, J. M. (2005) · Journal of Applied Psychology · doi:10.1037/0021-9010.90.6.1217 · Cited by 2,276 · see citing works
How changes in job demands and resources predict burnout, work engagement, and sickness absenteeism.
Schaufeli, W. B., Bakker, A. B., & Van Rhenen, W. (2009) · Journal of Organizational Behavior · doi:10.1002/job.595 · Cited by 2,059 · see citing works
Cost of disorders of the brain in Europe 2010
Gustavsson, A., Svensson, M., Jacobi, F., Allgulander, C., Alonso, J., Beghi, E., Dodel, R., Ekman, M., Faravelli, C., Fratiglioni, L., et al. (2011) · European Neuropsychopharmacology · doi:10.1016/j.euroneuro.2011.08.008 · Cited by 1,723 · see citing works
Schaufeli, W. B., Taris, T. W., & van Rhenen, W. (2007) · Applied Psychology · doi:10.1111/j.1464-0597.2007.00285.x · Cited by 1,528 · see citing works
Hülsheger, U. R., Alberts, H. J. E. M., Feinholdt, A., & Lang, J. W. B. (2013) · Journal of Applied Psychology · doi:10.1037/a0031313 · Cited by 1,433 · see citing works
The friction cost method for measuring indirect costs of disease
Koopmanschap, M. A., Rutten, F., van Ineveld, B. M., & Roijen, L. H. (1995) · Journal of Health Economics · doi:10.1016/0167-6296(94)00044-5 · Cited by 1,141 · see citing works
The World Health Organization Health and Work Performance Questionnaire (HPQ)
Kessler, R. C., Barber, C., Beck, A. L., Berglund, P. A., Cleary, P. D., McKenas, D. K., Pronk, N., Simon, G. E., Stang, P., Üstün, T. B., et al. (2003) · Journal of Occupational and Environmental Medicine · doi:10.1097/01.jom.0000052967.43131.51 · Cited by 1,135 · see citing works
Cost‐effectiveness acceptability curves – facts, fallacies and frequently asked questions
Fenwick, E. A. L., OʼBrien, B. J., & Briggs, A. H. (2004) · Health Economics · doi:10.1002/hec.903 · Cited by 946 · see citing works
Hakanen, J. J., & Schaufeli, W. B. (2012) · Journal of Affective Disorders · doi:10.1016/j.jad.2012.02.043 · Cited by 883 · see citing works
Scale up services for mental disorders: a call for action
(2007) · The Lancet · doi:10.1016/s0140-6736(07)61242-2 · Cited by 835 · see citing works
Black, W. C. (1990) · Medical Decision Making · doi:10.1177/0272989x9001000308 · Cited by 578 · see citing works
Effective and viable mind-body stress reduction in the workplace: A randomized controlled trial.
Wolever, R. Q., Bobinet, K. J., McCabe, K., Mackenzie, E. R., Fekete, E., Kusnick, C. A., & Baime, M. (2012) · Journal of Occupational Health Psychology · doi:10.1037/a0027278 · Cited by 539 · see citing works
Kessler, R. C., Ames, M., Hymel, P. A., Loeppke, R., McKenas, D. K., Richling, D. E., Stang, P., & Üstün, T. B. (2004) · Journal of Occupational and Environmental Medicine · doi:10.1097/01.jom.0000126683.75201.c5 · Cited by 447 · see citing works
Cost-of-illness studies of depression
Luppa, M., Heinrich, S., Angermeyer, M. C., König, H., & Riedel-Heller, S. G. (2006) · Journal of Affective Disorders · doi:10.1016/j.jad.2006.07.017 · Cited by 356 · see citing works
Foureur, M., Besley, K., Burton, G., Yu, N., & Crisp, J. (2013) · Contemporary Nurse · doi:10.5172/conu.2013.45.1.114 · Cited by 336 · see citing works
Expanding research on the economics of occupational health
Leigh, J. P. (2006) · Scandinavian Journal of Work Environment & Health · doi:10.5271/sjweh.969 · Cited by 334 · see citing works
Economic evaluation alongside randomised controlled trials: design, conduct, analysis, and reporting
Petrou, S., & Gray, A. (2011) · British medical journal · doi:10.1136/bmj.d1548 · Cited by 313 · see citing works
Microcosting Quantity Data Collection Methods
Frick, K. D. (2009) · Medical Care · doi:10.1097/mlr.0b013e31819bc064 · Cited by 294 · see citing works
Mindfulness-Based Stress Reduction (MBSR) for Primary School Teachers
Gold, E., Smith, A., Hopper, I., Herne, D., Tansey, G., & Hulland, C. (2010) · Journal of Child and Family Studies · doi:10.1007/s10826-009-9344-0 · Cited by 288 · see citing works
Workaholic and work engaged employees: Dead ringers or worlds apart?
van Beek, I., Taris, T. W., & Schaufeli, W. B. (2011) · Journal of Occupational Health Psychology · doi:10.1037/a0024392 · Cited by 270 · see citing works
Student Burnout and Engagement: A Test of the Conservation of Resources Theory
Alarcon, G. M., Edwards, J. M., & Menke, L. E. (2011) · The Journal of Psychology · doi:10.1080/00223980.2011.555432 · Cited by 250 · see citing works
Productivity Costs in Economic Evaluations: Past, Present, Future
Krol, M., Brouwer, W. B. F., & Rutten, F. (2013) · PharmacoEconomics · doi:10.1007/s40273-013-0056-3 · Cited by 237 · see citing works
Lakhan, S. E., & Schofield, K. L. (2013) · PLoS ONE · doi:10.1371/journal.pone.0071834 · Cited by 233 · see citing works
Bond, F. W., & Flaxman, P. E. (2006) · Journal of Organizational Behavior Management · doi:10.1300/j075v26n01_05 · Cited by 221 · cited 1× · see citing works
“A mindfulness-based approach was chosen, as it is thought to produce psychological flexibility (ie, the propensity to persist with behaviors that are consistent with ones values and to desist from those that are not),(15) which in turn may lead to improved work engagement and mental health.(16) Previous evaluations of…”
MethodNurse Leader Mindfulness Meditation Program for Stress Management: A Randomized Controlled Trial
Pipe, T. B., Bortz, J. J., Dueck, A., Pendergast, D., Buchda, V., & Summers, J. (2009) · JONA: The Journal of Nursing Administration · doi:10.1097/nna.0b013e31819894a0 · Cited by 213 · see citing works
PRODISQ: a modular questionnaire on productivity and disease for economic evaluation studies
Koopmanschap, M. A. (2005) · Expert Review of Pharmacoeconomics & Outcomes Research · doi:10.1586/14737167.5.1.23 · Cited by 183 · see citing works
Is work engagement related to work ability beyond working conditions and lifestyle factors?
Airila, A., Hakanen, J., Punakallio, A., Lusa, S., & Luukkonen, R. A. (2012) · International Archives of Occupational and Environmental Health · doi:10.1007/s00420-012-0732-1 · Cited by 145 · see citing works
The Relationship of Engagement and Job Satisfaction in Working Samples
Alarcon, G. M., & Lyons, J. B. (2011) · The Journal of Psychology · doi:10.1080/00223980.2011.584083 · Cited by 120 · see citing works
van Dongen, J. M., Proper, K. I., van Wier, M. F., van der Beek, A. J., Bongers, P. M., van Mechelen, W., & van Tulder, M. W. (2011) · Obesity Reviews · doi:10.1111/j.1467-789x.2011.00925.x · Cited by 118 · see citing works
Self-citationvan Berkel, J., Boot, C. R. L., Proper, K. I., Bongers, P. M., & van der Beek, A. J. (2012) · Journal of Occupational and Environmental Medicine · doi:10.1097/jom.0b013e318269e5a6 · Cited by 102 · see citing works
Self-citationRegression methods for cost-effectiveness analysis with censored data
Willan, A. R., Lin, D. Y., & Manca, A. (2004) · Statistics in Medicine · doi:10.1002/sim.1794 · Cited by 92 · see citing works
van Berkel, J., Boot, C. R. L., Proper, K. I., Bongers, P. M., & van der Beek, A. J. (2014) · PLoS ONE · doi:10.1371/journal.pone.0084118 · Cited by 89 · see citing works
Self-citationTrial-Based Economic Evaluations in Occupational Health
van Dongen, J. M., van Wier, M. F., Tompa, E., Bongers, P. M., van der Beek, A. J., van Tulder, M. W., & Bosmans, J. E. (2014) · Journal of Occupational and Environmental Medicine · doi:10.1097/jom.0000000000000165 · Cited by 85 · see citing works
Self-citationRobroek, S. J., Polinder, S., Bredt, F. J., & Alex Burdorf, A. (2012) · Health Education Research · doi:10.1093/her/cys015 · Cited by 60 · see citing works
Effectiveness of a worksite mindfulness-based multi-component intervention on lifestyle behaviors
van Berkel, J., Boot, C. R. L., Proper, K. I., Bongers, P. M., & van der Beek, A. J. (2014) · International Journal of Behavioral Nutrition and Physical Activity · doi:10.1186/1479-5868-11-9 · Cited by 59 · see citing works
Self-citationvan Berkel, J., Proper, K. I., Boot, C. R. L., Bongers, P. M., & van der Beek, A. J. (2011) · BMC Public Health · doi:10.1186/1471-2458-11-736 · Cited by 38 · see citing works
Self-citationvan Dongen, J. M., Tompa, E., Clune, L., Sarnocinska-Hart, A., Bongers, P. M., van Tulder, M. W., van der Beek, A. J., & van Wier, M. F. (2013) · Implementation Science · doi:10.1186/1748-5908-8-57 · Cited by 36 · see citing works
Self-citationManaging manpower turnover costs.
Smith, H. L., & Watkins, L. E. (1978) · PubMed · Cited by 32 · see citing works
Groeneveld, I. F., van Wier, M. F., Proper, K. I., Bosmans, J. E., van Mechelen, W., & van der Beek, A. J. (2011) · Journal of Occupational and Environmental Medicine · doi:10.1097/jom.0b013e31821b9c24 · Cited by 30 · see citing works
Self-citationHengel, K. M. O., Bosmans, J. E., van Dongen, J. M., Bongers, P. M., van der Beek, A. J., & Blatter, B. M. (2013) · American Journal of Industrial Medicine · doi:10.1002/ajim.22267 · Cited by 26 · see citing works
Self-citationvan Dongen, J. M., Strijk, J. E., Proper, K. I., van Wier, M. F., van Mechelen, W., van Tulder, M. W., & van der Beek, A. J. (2013) · Journal of Occupational and Environmental Medicine · doi:10.1097/jom.0b013e31827b738e · Cited by 26 · see citing works
Self-citationThe economics of mental health in the workplace: what do we know and where do we go?
McDaid, D. (2007) · Epidemiology and Psychiatric Sciences · doi:10.1017/s1121189x00002463 · Cited by 19 · see citing works
Allexandre, D., Neuman, A., Hunter, J., Morledge, T. J., & Roizen, M. F. (2012) · BMC Complementary and Alternative Medicine · doi:10.1186/1472-6882-12-s1-p119 · Cited by 9 · see citing works
Flagged first, then by citations
1 of the 47 references couldn’t be matched to a known paper.
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Mindfulness-based interventions: an overall review
Zhang, D., Lee, E. K. P., Mak, E. C. W., Ho, C. Y., & Wong, S. Y. S. (2021) · British Medical Bulletin · doi:10.1093/bmb/ldab005 · Cited by 668 · see citing works
Bartlett, L., Martin, A., Neil, A. L., Memish, K., Otahal, P., Kilpatrick, M., & Sanderson, K. (2019) · Journal of Occupational Health Psychology · doi:10.1037/ocp0000146 · Cited by 426 · see citing works
Galante, J., Friedrich, C., Dawson, A. F., Modrego-Alarcón, M., Gebbing, P., Delgado-Suárez, I., Gupta, R., Dean, L., Dalgleish, T., White, I. R., et al. (2021) · PLOS Medicine · doi:10.1371/journal.pmed.1003481 · Cited by 319 · see citing works
Grimani, A., Aboagye, E., & Kwak, L. (2019) · BMC Public Health · doi:10.1186/s12889-019-8033-1 · Cited by 269 · see citing works
Pak, K., Kooij, D. T. A. M., Lange, A. H. D., & van Veldhoven, M. J. P. M. (2018) · Human Resource Management Review · doi:10.1016/j.hrmr.2018.07.002 · Cited by 218 · see citing works
Fletcher, L., Bailey, C., Alfes, K., & Madden, A. (2019) · The International Journal of Human Resource Management · doi:10.1080/09585192.2019.1674358 · Cited by 99 · see citing works
Michaelsen, M. M., Graser, J., Onescheit, M., Tuma, M. P., Werdecker, L., Pieper, D., & Esch, T. (2023) · Mindfulness · doi:10.1007/s12671-023-02130-7 · Cited by 70 · see citing works
“In this review, four different research articles (Hartfiel et al., 2017; Singh et al., 2016, 2020; van Dongen et al., 2016) have been included that analyzed distinct cost-effectiveness parameters.”
Contemplative interventions and employee distress: A meta‐analysis
Slemp, G. R., Jach, H. K., Chia, A., Loton, D. J., & Kern, M. L. (2019) · Stress and Health · doi:10.1002/smi.2857 · Cited by 47 · see citing works
Economic Evaluations of Mindfulness-Based Interventions: a Systematic Review
Zhang, L., Lopes, S. S., Lavelle, T. A., Jones, K. O., Chen, L., Jindal, M., Zinzow, H. M., & Shi, L. (2022) · Mindfulness · doi:10.1007/s12671-022-01960-1 · Cited by 45 · see citing works
Wong, K. F., Teng, J., Chee, M. W. L., Doshi, K., & Lim, J. (2018) · Frontiers in Human Neuroscience · doi:10.3389/fnhum.2018.00080 · Cited by 42 · see citing works
Sakuraya, A., Shimazu, A., Imamura, K., & Kawakami, N. (2020) · Frontiers in Psychology · doi:10.3389/fpsyg.2020.00235 · Cited by 38 · see citing works
Steel, J. S., Godderis, L., & Luyten, J. (2018) · Scandinavian Journal of Work Environment & Health · doi:10.5271/sjweh.3715 · Cited by 28 · see citing works
Wijnen, B. F. M., Lokkerbol, J., Boot, C. R. L., Havermans, B. M., van der Beek, A. J., & Smit, F. (2019) · International Archives of Occupational and Environmental Health · doi:10.1007/s00420-019-01471-y · Cited by 26 · see citing works
Self-citationKosugi, T., Ninomiya, A., Nagaoka, M., Hashimoto, Z., Sawada, K., Park, S., Fujisawa, D., Mimura, M., & Sado, M. (2021) · Frontiers in Psychology · doi:10.3389/fpsyg.2021.700916 · Cited by 29 · see citing works
The Emergency Resiliency Initiative: A Pilot Mindfulness Intervention Program
Muir, K. J., & Keim‐Malpass, J. (2019) · Journal of Holistic Nursing · doi:10.1177/0898010119874971 · Cited by 22 · see citing works
A Scoping Review of Economic Evaluations of Workplace Wellness Programs
Unsal, N., Weaver, G. M., Bray, J. W., & Bibeau, D. L. (2021) · Public Health Reports · doi:10.1177/0033354920976557 · Cited by 18 · see citing works
Deng, G., Huang, C., Cheung, S., & Zhang, C. (2021) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2021.790064 · Cited by 14 · see citing works
A Systematic Review of Occupational Health and Safety Business Cases
Lee, G. (2017) · Workplace Health & Safety · doi:10.1177/2165079917730073 · Cited by 13 · see citing works
Das, S. K., Mason, S. T., Vail, T. A., Blanchard, C. M., Chin, M. K., Rogers, G. T., Livingston, K. A., & Turgiss, J. L. (2019) · American Journal of Health Promotion · doi:10.1177/0890117119883585 · Cited by 12 · see citing works
Sado, M., Kosugi, T., Ninomiya, A., Nagaoka, M., Park, S., Fujisawa, D., Shirahase, J., & Mimura, M. (2020) · JMIR Research Protocols · doi:10.2196/15892 · Cited by 12 · see citing works
Wagner, A. P., Galante, J., Dufour, G., Barton, G., Štochl, J., Vainre, M., & Jones, P. B. (2023) · BMJ Open · doi:10.1136/bmjopen-2023-071724 · Cited by 7 · see citing works
Bienestar eudaimónico y meditación mindfulness en los contextos laborales: una revisión sistemática
Rincón, I. C., García‐Palacios, A., & Vázquez, S. S. (2023) · Anales de Psicología · doi:10.6018/analesps.493671 · Cited by 6 · see citing works
Azadehyaei, H., Zhang, Y., Song, Y., Gottschalk, T., & Andérson, G. S. (2025) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph22050809 · Cited by 5 · see citing works
Vainre, M., Dalgleish, T., Bendriss‐Otiko, T., Butler, M., Kirkpatrick, A., Kosugiyama, N., Mariscotti, F., Martinez‐Sosa, C., Sideri, A., Soenksen, S., et al. (2025) · Stress and Health · doi:10.1002/smi.70123 · Cited by 5 · see citing works
Vainre, M., Galante, J., Watson, P., Dalgleish, T., & Hitchcock, C. (2022) · BMJ Open · doi:10.1136/bmjopen-2021-050951 · Cited by 4 · see citing works
Vonderlin, R., Schmidt, B., Biermann, M., Lyssenko, L., Heinzel‐Gutenbrunner, M., Kleindienst, N., Bohus, M., & Müller, G. (2023) · Mindfulness · doi:10.1007/s12671-023-02172-x · Cited by 5 · see citing works
Mindful eating program (MEPCOP) and its impact on children’s food consumption
Perez, B. D. L., Delgado-Ríos, M., & García-Castro, F. J. (2025) · Current Psychology · doi:10.1007/s12144-025-08299-5 · Cited by 3 · see citing works
Wang, M., Qi, Y., & Cheng, J. (2025) · Buildings · doi:10.3390/buildings15101602 · Cited by 2 · see citing works
Salutogenic Principles in Workplace Health Promotion Interventions: A Scoping Review
Wrede, S., Gärtner, I.-M., & Mortsiefer, A. (2026) · Journal of Prevention · doi:10.1007/s10935-026-00915-9 · Cited by 2 · see citing works
Sado, M., Yamada, M., Ninomiya, A., Nagaoka, M., Goto, N., Koreki, A., Nakagawa, A., Segal, Z. V., & Mimura, M. (2022) · JMIR Research Protocols · doi:10.2196/36012 · Cited by 2 · see citing works
Nagaoka, M., Koreki, A., Kosugi, T., Ninomiya, A., Mimura, M., & Sado, M. (2023) · Psychology Research and Behavior Management · doi:10.2147/prbm.s406347 · Cited by 2 · see citing works
Bigard, X. A. (2022) · Bulletin de l Académie Nationale de Médecine · doi:10.1016/j.banm.2022.04.001 · Cited by 1 · see citing works
Vainre, M., Dalgleish, T., Watson, P., Haag, C., Dercon, Q., Galante, J., & Hitchcock, C. (2024) · BMJ Mental Health · doi:10.1136/bmjment-2023-300885 · Cited by 1 · see citing works
Kise, S., & Yoshihara, S. (2025) · Cureus · doi:10.7759/cureus.89929
Effectiveness of work ability interventions on productivity: a systematic review
Pasi, K., Eija, S., Immonen, M., Kangas, P., Rissanen, E., & Linnosmaa, I. (2025) · Journal of Occupational Health · doi:10.1093/joccuh/uiaf051
Qi, Y., Xu, S., & Cheng, J. (2026) · Buildings · doi:10.3390/buildings16142845
- Authors
- van Dongen, J. M., van Berkel, J., Boot, C. R. L., Bosmans, J. E., Proper, K. I., Bongers, P. M., van der Beek, A. J., van Tulder, M. W., & van Wier, M. F.
- Affiliations
- Netherlands Organisation for Applied Scientific Research (NL)
- Venue
- Journal of Occupational & Environmental Medicine
- Published
- 2016-06
- Volume
- 58
- Issue
- 6
- Pages
- 550-560
- ISSN
- 1076-2752 (ISSN-L)
- OpenAlex
- W2416335275
- Cited by
- 36
- References
- 47
- Citations by year
- 2026: 2 · 2025: 6 · 2024: 1 · 2023: 5 · 2022: 4 · 2021: 5 · 2020: 2 · 2019: 7 · 2018: 3 · 2017: 1
- FWCI
- 4.92
- Type
- journal article
- Language
- en
- Open access
- green
- pure.amsterdamumc.nl
- Licence
- other-oa
- Locations
- Journal of Occupational and Environmental Medicine (publishedVersion)
- PubMed (publishedVersion)
- Pure Amsterdam UMC (publishedVersion, other-oa)
- Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion)
- VU Research Portal (publishedVersion)
- TNO Repository (submittedVersion)
- Radboud Repository (Radboud University) (submittedVersion)
- Repository hosted by TU Delft Library (TU Delft) (submittedVersion)
- Data Archiving and Networked Services (DANS) (submittedVersion)
- Topics
- Social Sciences › Psychology › Clinical Psychology › Mindfulness and Compassion Interventions
- Health Sciences › Health Professions › General Health Professions › Workplace Health and Well-being
- Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Health Systems, Economic Evaluations, Quality of Life
- Keywords
- mindfulness training, workplace interventions, cost-effectiveness, return on investment, e-coaching, work engagement, job satisfaction, vitality, work ability, employer costs, research institute staff
- MeSH terms
- Adult, Cost-Benefit Analysis, Female, Health Promotion, Humans, Male, Middle Aged, Netherlands, Occupational Health Services, Workplace, Mindfulness
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