The Effect of Firm-Level Contracts on the Structure of Wages: Evidence from Matched Employer-Employee Data

Working Paper: NBER ID: w11829

Authors: David Card; Sara de la Rica

Abstract: In many European countries sectoral bargaining agreements are automatically extended to cover all firms in an industry. Employers and employees can also negotiate firm-specific contracts. We use a large matched employer-employee data set from Spain to study the effects of firm-level contracting on the structure of wages. We estimate a series of wage determination models, including specifications that control for individual characteristics, co-worker characteristics, the bargaining status of the workplace, and the probability the workplace is covered by a firm-level contract. We find that firm-level contracting is associated with a 5-10 percent wage premium, with larger premiums for more highly paid workers. Although we cannot decisively test between alternative explanations for the firm-level contracting premium, workers with firm-specific contracts have significantly longer job tenure, suggesting that the premium is at least partially a non-competitive phenomenon.

Keywords: firm-level contracts; wage structure; Spain; matched employer-employee data; wage premiums

JEL Codes: J31; J50


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
firm-level contracting (L14)wage premium (J31)
firm-level contracting (L14)wages (J31)
firm-level contracts (L14)longer job tenures (J63)
wage premium (J31)non-competitive phenomenon (L19)
firm-specific contracts (L14)wage premium (J31)
unobserved ability differences (D29)wage determination (J31)

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