Management Science 60, no. 4 (April 2014): 824–844.
Top management structures in large US firms have changed significantly
since the mid-1980s. While the size of the executive team—the group of
managers reporting directly to the CEO—doubled during this period, this
growth was driven primarily by an increase in functional managers rather
than general managers, a phenomenon we term “functional
centralization.” Using panel data on senior management positions, we
show that changes in the structure of the executive team are tightly
linked to changes in firm diversification and IT investments. These
relationships depend crucially on the function involved: those closer to
the product (“product” functions, e.g. marketing/R&D) behave
differently from functions further from the product (“administrative”
functions, e.g. finance/law/HR). We argue that this distinction is
driven by differences in the information-processing activities
associated with each function, and apply this insight to refine and
extend existing theories of centralization. We also discuss the
implications of our results for organizational forms beyond the
executive team.