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On the Proportionality and Homogeneity of Consumption and Income


  • Avner Bar-Ilan


In its certainty equivalence form, consumption is proportional to the sum of human and non-human wealth. With labour income uncertainty the proportionality takes the form of homogeneity of consumption with respect to the components of wealth. In this paper we analyse the stochastic properties of labour income that yield the homogeneity property as the utility-maximizing solution. A sufficient condition is derived on the way in which a certain income shift preserves the homogeneity property. This condition can hold for some geometric processes where the logarithm of labour income is modelled as ARMA ('k, l'). For other income processes the response of consumption to a certain income innovation may be larger, which appears as excess sensitivity.

Suggested Citation

  • Avner Bar-Ilan, 1995. "On the Proportionality and Homogeneity of Consumption and Income," Canadian Journal of Economics, Canadian Economics Association, vol. 28(4b), pages 1153-1160, November.
  • Handle: RePEc:cje:issued:v:28:y:1995:i:4b:p:1153-60

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    References listed on IDEAS

    1. David E. Bloom & Morley Gunderson, 1991. "An Analysis of the Earnings of Canadian Immigrants," NBER Chapters,in: Immigration, Trade, and the Labor Market, pages 321-342 National Bureau of Economic Research, Inc.
    2. Chiswick, Barry R, 1978. "The Effect of Americanization on the Earnings of Foreign-born Men," Journal of Political Economy, University of Chicago Press, vol. 86(5), pages 897-921, October.
    3. Mincer, Jacob, 1978. "Family Migration Decisions," Journal of Political Economy, University of Chicago Press, vol. 86(5), pages 749-773, October.
    4. Baker, Michael & Benjamin, Dwayne, 1994. "The Performance of Immigrants in the Canadian Labor Market," Journal of Labor Economics, University of Chicago Press, vol. 12(3), pages 369-405, July.
    5. Alan G. Green & David A. Green, 1995. "Canadian Immigration Policy: The Effectiveness of the Point System and Other Instruments," Canadian Journal of Economics, Canadian Economics Association, vol. 28(4b), pages 1006-1041, November.
    6. Charles M. Beach & Christopher Worswick, 1993. "Is There a Double-Negative Effect on the Earnings of Immigrant Women?," Canadian Public Policy, University of Toronto Press, vol. 19(1), pages 36-53, March.
    7. John M. Abowd & Richard B. Freeman, 1991. "Immigration, Trade, and the Labor Market," NBER Books, National Bureau of Economic Research, Inc, number abow91-1, January.
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    Cited by:

    1. repec:oup:oxecpp:v:69:y:2017:i:4:p:1101-1119. is not listed on IDEAS
    2. Hubbard, R Glenn & Skinner, Jonathan & Zeldes, Stephen P, 1995. "Precautionary Saving and Social Insurance," Journal of Political Economy, University of Chicago Press, vol. 103(2), pages 360-399, April.
    3. Bertaut, Carol C. & Haliassos, Michael, 1997. "Precautionary portfolio behavior from a life-cycle perspective," Journal of Economic Dynamics and Control, Elsevier, vol. 21(8-9), pages 1511-1542, June.
    4. Karen E. Dynan & Jonathan Skinner & Stephen P. Zeldes, 2004. "Do the Rich Save More?," Journal of Political Economy, University of Chicago Press, vol. 112(2), pages 397-444, April.

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