The Firm Size Distribution in a Small Open Economy: Theory and Evidence

Qi Li and Patrick Walsh ()

No 200920, Working Papers from Geary Institute, University College Dublin

Abstract: We construct a theoretical model of the dynamic processes (firm entry, growth, decline, and exit) that underpin the determination of a limiting firm size distribution (FSD). In particular, we model such dynamic processes using key structural parameters; sunk cost, exogenous entry constraints, and opportunity values of finite duration. The limiting FSD we derive, in steady state, turns out to be a combination of a Logarithmic and Zipf distribution. We estimate these structural parameters using long periods of Irish company data for defined cohorts of firms, in terms of trade orientation, within narrowly defined industries. Within non-exporting and exporting samples of companies our model fits the actual FSD well with a good return to the Zipf distribution in the upper tail, that is less dependent on the estimated structural parameters, and a good return at the lower tail, where the Logarithmic effects are endogenously driven by firm heterogeneity in estimated structural parameters.

JEL-codes: F15 L11 (search for similar items in EconPapers)
Pages: 43 pages
Date: 2009-07-13
New Economics Papers: this item is included in nep-bec and nep-ent
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