Modeling charitable contributions of time and money

• 成果类型: Article
• 署名作者: Duncan, B
• 署名单位: University of Colorado System; University of Colorado Denver
• 刊物名称: JOURNAL OF PUBLIC ECONOMICS
• ISSN/ISSBN: 0047-2727
• DOI: 10.1016/S0047-2727(98)00097-8
• 发表日期: 1999
• 页码: 213-242
• 关键词: Public goods; crowd-out; volunteer labor; charitable contributions; charity; nonprofit organizations

摘要

Public goods theory predicts that government spending an charity can perfectly crowd-out charitable contributions. Empirical research has found little support for the perfect crowd-out hypothesis. However, the empirical work only measures part of a contributor's total contribution: gifts of money. Contributors also volunteer labor. This article extends the public goods model to the case in which individuals contribute both time and money to a charity that in turn produces a public good. The model suggests that charitable contributions of time and money are perfectly substitutable in equilibrium. This result offers new interpretations for existing empirical observations, and suggests a new test of the crowd-out hypothesis. The implications of the model are empirically tested using a national survey of charitable activity. (C) 1999 Elsevier Science S.A. All rights reserved.