Publication: Estimating union wage effects and the probability of union membership in the U.K. during 1991-2003
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2010-06
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Abstract
Using a dynamic model of unionism and wage determination we find that the unobserved factors that
influence union membership also affect wages. We observe a significant decline in trade union
membership persistence during the period under analysis. We find that UK trade unions still play a nonnegligible,
albeit diminishing, role in wage formation. While unions were unable to establish a wage
premium for male members during the two periods considered, the female union wage effect stood at
(19.4%, 17.6%) during (1991-1996, 1997-2002) respectively. The endogeneity correction procedure
employed yields a discernible pattern of the union wage effect relative to OLS and fixed effects thus,
refuting the pessimistic conclusions reached by Freeman and Medoff (1982) and Lewis (1986) that
endogeneity correction methodologies do not contribute to our understanding of the union wage effect
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Union membership persistence, Union wage effects, Unobserved heterogeneity, Dynamic model of unionism and wage determination