“…However, it is our view that the study of voice in PBOs is important for the following four challenges that PBOs face. First, PBOs face significant knowledge sharing challenges, which are undermining their competitiveness (Zerjav, 2015). Second, PBOs are not engaging project workers enough (Dainty et al, 2009;Keegan & Den Hartog, 2018) and the lack of feedback (direct voice) limits opportunities to improve processes (Love et al, 2016), solve problems (Ahern, Leavy, & Byrne, 2014) and gather ideas for planning (Dainty et al, 2009).…”