Does buyers' financial slack promote or inhibit suppliers' circular economy performance?

Extant research examining the link between slack resources and performance offers few insights into how buyer firms' financial slack influences suppliers' circular economy (CE) performance. We collect secondary data from 290 buyer-supplier dyads of listed firms in China during 2006–2018 from CSMAR database. Using panel data analysis, we find a nonlinear (U-shaped) relationship between them. In addition, some relationship-specific contextual factors, i.e., buyer power and technology capability, have positive moderating effects, while buyer-supplier geographical distance has negative moderating effects on the main U-shaped relationship. Our study contributes to the literature on the slack-performance debate confirming the CE performance effect of financial slack in the business-to-business (B2B) relationship. • We find a nonlinear (U-shaped) relationship between slack resources and performance. • Some relationship-specific contextual factors, i.e., buyer power and technology capability, have positive moderating effects. • Buyer-supplier geographical distance has negative moderating effects on the main U-shaped relationship.