1. Henderson M, Glozier N, Elliott KH. Long term sickness absence. Br Med J. 2005;330:802–3.
2. Floderus B, Goransson S, Alexanderson K, Aronsson G. Self-estimated life situation in patients on long-term sick leave. J Rehabil Med. 2005;37(5):291–9.
3. National Institute for Public Health and the Environment. Cost of Work Incapacity. 2020. (https://​www.​volks​gezon​dheid​enzorg.​info/​onder​werp/​ arbei​dsong​eschi​ktheid/​kosten/​kosten).
4. Dutch Social Security Agency. I am sick (WIA disability pension). 2020. (https://​www.​uwv.​nl/​parti​culie​ren/​ziek/​ziek-​wia-​uitke​ring/​tijde​ns-​wia-​ uitke​ring/​detail/​re-​integ​ratie-​tijde​ns-​mijn-​wga-​uitke​ring/​mijn-​mogel​ ijkhe​den-​om-​te-​re-​integ​reren).
5. Detaille SI, Heerkens YF, Engels JA, Van Der Gulden JWJ, Van Dijk FJH. Common prognostic factors of work disability among employees with a chronic somatic disease: a systematic review of cohort studies. Scand J Work Environ Health. 2009;35(4):261–81.
6. Cornelius LR, Van der Klink JJL, Groothoff JW, Brouwer S. Prognostic factors of long term disability due to mental disorders: a systematic review. J Occup Rehabil. 2011;21(2):259–74.
7. Dekkers-Sánchez PM, Wind H, Sluiter JK, Frings-Dresen MH. What factors are most relevant to the assessment of work ability of employees on long-term sick leave? The physicians’ perspective. Int Arch Occup Environ Health. 2013;86(5):509–18.
8. Vogel N, Schandelmaier S, Zumbrunn T, Ebrahim S, de Boer WE, Busse JW, Kunz R. Return-to-work coordination programmes for improving return to work in workers on sick leave. Cochrane Database Syst Rev. 2017;3:CD011618.
9. Hoefsmit N, Houkes I, Nijhuis FJ. Intervention characteristics that facilitate return to work after sickness absence: a systematic literature review. J Occup Rehabil. 2012;22(4):462–77.
10. Fink A, Kosecoff J, Chassin M, Brook RH. Consensus methods: characteristics and guidelines for use. Am J Public Health. 1984;74(9):979–83.
11. Hutchings A, Raine R, Sanderson C, Black N. A comparison of formal consensus methods developing clinical guidelines. J Health Serv Res Policy. 2006;11(4):218–24.
12. McKenna HP. The Delphi technique: a worthwhile research approach for nursing? J Adv Nurs. 1993;19:1221–5.
13. Jones J, Hunter D. Consensus methods for medical and health services research. BMJ. 1995;311:376–80.
14. Vonk Noordegraaf A, Huirne JAF, Brölmann HAM, Van Mechelen W, Anema JR. Multidisciplinary convalescence recommendations after gynaecological surgery: a modified Delphi method among experts. Br J Obstet Gynaecol. 2011;118(13):1557–67.
15. Weerdesteijn KHN, Schaafsma FG, Van der Beek AJ, Anema JR. Limitations to Work-Related Functioning of People with Persistent ‘“Medically Unexplained”’ Physical Symptoms: A Modified Delphi Study Among Physicians. J Occup Rehabil. 2017;27:434–44.
16. Labour expert Knowledge Center. Scan Workability Job Seekers. 2012. (https://​www.​arbei​dsdes​kundi​gen.​nl/​cms/​files/​2015-​06/​14350​54403_​ akc-​onder​zoeks​cahier-​10.​pdf ).
17. Labour expert Knowledge Center. Methodically determining of secondary factors of re-integration. 2014. (https://​www.​arbei​dsdes​kundi​gen.​nl/​ cms/​files/​2015-​06/​14350​54968_​akc-​onder​zoeks​cahie​r14.​pdf ).
18. Gragnano A, Negrini A, Miglioretti M, Corbière M. Common Psychosocial Factors Predicting Return to Work After Common Mental Disorders, Cardiovascular Diseases, and Cancers: A Review of Reviews Supporting a Cross-Disease Approach. J Occup Rehabil. 2018;28:215–31.
19. Rashid M, Kristofferzon ML, Nilsson A, Heiden M. Factors associated with return to work among people on work absence due to long-term neck or back pain: a narrative systematic review. Br Med J Open. 2017;7:e014939.
20. Steenstra IA, Munhall C, Irvin E, Oranye N, Passmore S, Van Eerd D, Malhood Q, Hogg-Johnson S. Systematic Review of Prognostic Factors for Return to Work in Workers with Sub Acute and Chronic Low Back Pain. J Occup Rehabil. 2017;27:369–81.
21. Dekkers-Sanchez PM, Hoving JL, Sluiter JK, Frings-Dresen MHW. Factors associated with long-term sick leave in sick-listed emloyees: a systematic review. Occup Environ Med. 2008;65:153–7.
22. Lagerveld SE, Blonk RW, Brenninkmeijer V, Wijngaards-de Meij L, Schaufeli WB. Work-focused treatment of common mental disorders and return to work: a comparative outcome study. J Occup Health psychol. 2012;17(2):220.
23. Park J, Esmail S, Rayani F, Norris CM, Gross DP. Motivational interviewing for workers with disabling musculoskeletal disorders: results of a cluster randomized control trial. J Occup Rehabil. 2018;28(2):252–64.
24. Lytsy P, Carlsson L, Anderzen I. Effectiveness of two vocational rehabilitation programmes in women with long-term sick leave due to pain syndrome or mental illness: 1-year follow-up of a randomized controlled trial. J Rehabil Med. 2017;49(2):170–7.
25. Skouen JS, Grasdal AL, Haldorsen EM, Ursin H. Relative cost-effectiveness of extensive and light multidisciplinary treatment programs versus treatment as usual for patients with chronic low back pain on long-term sick leave: randomized controlled study. Spine. 2002;27(9):901–9.
26. Skouen JS, Grasdal A, Haldorsen EM. Return to work after comparing outpatient multidisciplinary treatment programs versus treatment in general practice for patients with chronic widespread pain. Eur J Pain. 2006;10(2):145–52.
27. Viering S, Jäger M, Bärtsch B, Nordt C, Rössler W, Warnke I, Kawohl W. Supported employment for the reintegration of disability pensioners with mental illnesses: a randomized controlled trial. Front Public Health. 2015;3:237.
28. Li-Tsang CWP, Li EJQ, Lam CS, Hui KY, Chan CCH. The Effect of a Job Placement and Support Program for Workers with Musculoskeletal Injuries: A Randomized Control Trial (RCT) Study. J Occup Rehabil. 2008;18:299–306.
29. Divosa. Factsheet dealing with barriers. 2012. (https://​parti​cipat​iecam​pus.​ nl/​kenni​sbank/​item/​coach​en-​en-​begel​eiden/​werkw​ijzer-​omgaan-​met-​ belem​merin​gen/​71).
30. Escorpizo R, Reneman MF, Ekholm J, Fritz J, Krupa T, Marnetoft S, Maroun CE, Rodriguez Guzman J, Suzuki Y, Stucki G, Chanet CCH. A Conceptual Definition of Vocational Rehabilitation Based on the ICF: Building a Shared Global Model. J Occup Rehabil. 2011;2011(21):126–33.
31. Keeny S, Hasson F, Mckenna HP. A critical review of the Delphi technique as a research methodology for nursing. Int J Nurs Stud. 2000;38:195–200.
32. de Vries G, Hees HL, Koeter MW, Lagerveld SE, Schene AH. Perceived impeding factors for return-to-work after long-term sickness absence due to major depressive disorder: a concept mapping approach. PLoS ONE. 2014;9(1):e85038.
