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Creator: King, Robert G. (Robert Graham) and Thomas, Julia Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 327 Abstract:
Many kinds of economic behavior involve discrete and occasional individual choices. Despite this, econometric partial adjustment models perform relatively well at the aggregate level. Analyzing the classic employment adjustment problem, we show how such microeconomic adjustment is well described by a new form of partial adjustment model that aggregates the actions of heterogeneous producers.
We develop a model where individual establishments infrequently alter the sizes of their workforces because such adjustments involve fixed costs. In the market equilibrium, employment responses to aggregate disturbances include changes both in target employments selected by individual establishments and in the measure of establishments actively undertaking adjustment. Yet the model retains a partial adjustment flavor in its aggregate responses. Moreover, in contrast to existing discrete adjustment models, our generalized partial adjustment model is sufficiently tractable to allow general equilibrium analysis, and it naturally extends to accommodate persistent differences in productivity across establishments in general equilibrium.
Mot-clé: Partial Adjustment, (S,s) Adjustment, and Employment Dynamics Assujettir: E20 - Consumption, Saving, Production, Investment, Labor Markets, and Informal Economy: General (includes Measurement and Data) and E10 - General Aggregative Models: General
Creator: Thomas, Julia Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 302 Abstract:
Previous research has suggested that discrete and occasional plant-level capital adjustments have significant aggregate implications. In particular, it has been argued that changes in plants’ willingness to invest in response to aggregate shocks can at times generate large movements in total investment demand. In this study, I re-assess these predictions in a general equilibrium environment. Specifically, assuming nonconvex costs of capital adjustment, I derive generalized (S,s) adjustment rules yielding lumpy plant-level investment within an otherwise standard equilibrium business cycle model. In contrast to previous partial equilibrium analyses, model results reveal that the aggregate effects of lumpy investment are negligible. In general equilibrium, households’ preference for relatively smooth consumption profiles offsets changes in aggregate investment demand implied by the introduction of lumpy plant-level investment. As a result, adjustments in wages and interest rates yield quantity dynamics that are virtually indistinguishable from the standard model.
Mot-clé: Lumpy Investment, (S,s) Adjustment, and Business Cycles Assujettir: E32 - Business Fluctuations; Cycles and E22 - Investment; Capital; Intangible Capital; Capacity