“…As opposed to 'substitution', where the new role performs tasks that are traditionally in the established professionals' domain for a lower cost, 'complementarity' develops when new roles assume tasks that were not previously performed or are considered 'lower-status', thus 'freeing up' professionals to perform higher-status tasks (Bach et al, 2008;Kessler et al, 2015Kessler et al, , 2017. While these processes could occur without managerial intervention, these studies found that HR practices such as training, mentorship, autonomy (Chen et al, 2022), multi-disciplinary teamworking, and assigning manageable workloads (Procter et al, 2018) could facilitate cross-occupational working.…”