“…Page 45 of 55 Supply Chain Management: an International Journal p p l y C h a i n M a n a g e m e n t : a n I n t e r n a t i o n a l J o u r n a l 3 Beckman et al, 2009;Ciliberti et al, 2009;Kauppi and Hannibal, 2017;Sayed et al, 2017;Tura et al, 2019;Villena and Gioia, 2018;Vurro et al, 2009 Adoption of sustainability initiatives b) Transformational leadership style Alvarez et al, 2010;Jia et al, 2019;MacCarthy and Jayarathne, 2012;Meqdadi et al, 2017;Touboulic et al, 2018 Diffusion of sustainability targets a) Access to many suppliers and compliance information symmetry Brockhaus et al, 2013;Castka and Balzarova, 2008;Lim and Phillips, 2008;Lund-Thomsen and Lindgreen, 2014;Sarkis et al, 2011;Touboulic et al, 2018 Villena andGioia, 2020;Vurro et al, 2009 (-) Hartmann and Moeller, 2014;Jia et al, 2019;Mejías et al, 2019 c) Focal firm delegation of sustainability-related responsibilities to first-tier suppliers Nair et al, 2016;Tachizawa and Wong, 2014;Tuni et al, 2019;Villena and Gioia, 2020;Wilhelm et al, 2016a a) Reduce operational burden on the focal firm Tachizawa and Wong, 2014 c) Lower-tier suppliers' commitment towards sustainability Gong et al, 2018;Wilhelm et al, 2016b c) Focal firm lack of resources c) First-tier suppliers' strong sustainability management capabilities Tachizawa and Wong, 2014;Wilhelm et al, 2016b First-tier supplier betweenness cent...…”