Effects of Public Ownership over Firms' Size and Overstaffing Problems

A model is presented to analyse the impact ofownership over the problem of excess of employmentgenerally found in public firms. A government has toprovide a service or build an infrastructure, underuncertainty about the valuation of the project byconsumers. Three possible ownership schemes areconsidered for the provision of this service: astate-owned firm, a private firm with a completecontingent contract, or a private firm with anincomplete contract. In all three schemes, the agentthat chooses the size of the project is always thegovernment, without any asymmetries of information.Even though multiple solutions are feasible and nodefinitive conclusion is found to be valid for allstates of nature, an evaluation of outcomes shows thata private firm tends to underprovide infrastructure orservices more often, while under public ownership thefirm is typically larger. If incomplete contracting isadded to the private firm case, the model exhibitssolutions in which outcomes could be socially worsethan those obtained by a public firm. Only changes inthe voting behaviour of workers and contracting costsare required in this model to derive these results.Thus, the paper provides an example that ownershipper se may have an effect on the size andefficiency of firms, even under symmetric informationconditions, an extreme that has been generally deniedin the literature on public firms and privatisation.