Intervention mapping for development of a participatory return-to-work intervention for temporary agency workers and unemployed workers sick-listed due to musculoskeletal disorders

Table 3 Theoretical methods and practical strategies

Determinant	Methods from theory	Strategy	Tools/materials
Risk perception and knowledge	Passive learning/providing information	Providing written and verbal information	Letter sent to W about research
			IP explains about personal risk of occupational disability and ending in long term sickness benefit scheme
			Researcher explains participatory RTW program in phone call and sends invitation with folder, IP also explains in first consult.
			RC explains participatory RTW process to W and guides the RTW program
	Active processing of information	Evaluating understanding	IP instructs inventory of RTW obstacles to W as home assignment
			Inventory of RTW obstacles in RTW intervention program
Skills	Guided practise	Guided practise	W practises explanation of obstacles to LE with RC
			Practise thinking in broad outline during brainstorm session with RC RC provides post-it notes to stimulate thinking of multiple solutions
		Evaluation	RC checks at the end of the brainstorm session with W if the appointments in the RTW implementation plan are realizable
Self-efficacy	Positive reinforcement	Providing feedback	SIP and RC focus on personal abilities and capacities of W regarding RTW
		Evaluation	RC performs an evaluation with W by phone

Matrix of selected theoretical methods and practical strategies for the determinants risk perception and knowledge, skills, and self-efficacy, identified for the PE program. W = temporary agency worker or unemployed worker, IP = insurance physician, LE = labour expert, RC = RTW-coordinator

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