This document discusses management functions at PwC Ireland through an interview with Ken O'Brien, a Tax Director. It provides an overview of PwC as one of Ireland's largest professional services firms, with over 2,800 employees across 8 offices. The four main management functions of planning, organizing, leading, and controlling are examined in the context of PwC. Planning involves both strategic and tactical planning at different levels. Organizing is demonstrated through PwC's organizational chart and culture emphasis. Leading discusses developing people and communication. Controlling centers on performance management and risk mitigation.