“…Our research focus and contribution: on middle managers is thus motivated by both their recognized significance middle managers in strategic implementation (Balogun and Johnson 2004, Rouleau and Balogun, 2010, Mantere, 2008Floyd and Wooldridge 1994) as well as the importance of middle managers as agents of control within project-based organisations, not least construction (Styhre and Josephson 2006). Our purpose here, and key contribution, is to thus develop a SaP informed analysis of how middle managers mediate operations strategies, such as Lean, across project-based organisations, extending and focusing previous studies on more general business strategy at contractors (Betts and Ofori 1992, Cheah and Chew 2005, Cheah and Garvin 2002, Junnonen 1998, Kao et al 2009,Löwstedt and Räisänen 2014. Moreover, by focussing on the praxis of middle managers as mediators of strategy our analysis develops extant research on strategizing in project-based organisation such as construction, where despite some calls (e.g.…”