Public sector organisations in Western industrialised democracies have in recent years witnessed a growth in organisational professionals. The expansion of organisational professionals can be viewed as a consequence of accountability becoming a dominant value in public sector organisations. We will in this chapter present the argument that although the new layers of organisational professionals have been introduced to improve the accountability of unwieldy public bureaucracies, they paradoxically contribute to increasing bureaucratisation that makes holding public actors accountable more difficult. We trace this problem to managerialism, professionalisation and politicisation as three broader reform trajectories characterising public services. Our conclusion is that accountability is not just creating a more audited public sector but is generating a new type of public sector bureaucracy with the creation of an entourage of professional roles at the top echelon of the organisation.