Determinants of the willingness to pay and willingness to accept in the valuation of informal care. The CUIDARSE study

PurposeThis paper aims to study the value of informal care (IC) time from the perspective of caregivers using two alternative contingent valuation tools - willingness to pay (WTP) and willingness to accept (WTA) - and to identify the variables that affect the stated values.Design/methodology/approachThe authors used data from a multi-centre study of 610 adult caregivers conducted in two Spanish regions in 2013. The existence of "protest zeros" and "economic zeros" because of the severe budgetary constraints of the households was also considered. Two-part multivariate models were used to analyse the main factors that explained the declared values of WTA and WTP.FindingsThe average WTP and WTA were euro3.12 and euro5.98 per hour of care, respectively (euro3.2 and euro6.3 when estimated values for "protest zeros" and "economic zeros" were considered). Some explanatory variables of WTA and WTP are coincident (place of residence and intensity of care time), whereas other variables only help to explain WTP values (household and negative coping with caregiving) or WTA values (age and burden of care). Some nuances are also identified when comparing the results obtained without protest and economic zeros with the estimated values of these special zeros.Originality/valueStudies analysing the determinants of WTP and WTA in IC settings are very scarce. This paper seeks to provide information to fill this gap. The results indicate that the variables that explain the value of IC from one perspective may differ from the variables that explain it from an alternative perspective. Given the relevance of contextual factors, studies on the topic should be expanded, and care should be taken with the extrapolation of results across countries and settings.