Increasing returns in matching and labour market dynamics: Comments on indeterminacy and search theory

Guerrazzi, Marco (2015): Increasing returns in matching and labour market dynamics: Comments on indeterminacy and search theory.

Abstract

In this note I discuss the condition for indeterminacy in the context of search models with increasing returns in the matching technology. Building on the theoretical framework set forth by Giammarioli (2003), I argue that increasing returns with respect to vacancies at the aggregate level is only a necessary requirement for indeterminate equilibrium paths. Specifically, I show that sunspot equilibria can actually be obtained by imposing an additional condition between the private and the social elasticity of the matching function with respect to unemployment.

• Item Type: MPRA Paper
• Language: English
• Keywords: Search theory; Matching function; Indeterminacy; General equilibrium.
• Subjects: E - Macroeconomics and Monetary Economics > E1 - General Aggregative Models > E10 - General; E - Macroeconomics and Monetary Economics > E2 - Consumption, Saving, Production, Investment, Labor Markets, and Informal Economy > E24 - Employment ; Unemployment ; Wages ; Intergenerational Income Distribution ; Aggregate Human Capital ; Aggregate Labor Productivity; J - Labor and Demographic Economics > J6 - Mobility, Unemployment, Vacancies, and Immigrant Workers > J64 - Unemployment: Models, Duration, Incidence, and Job Search

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