The paper addresses mainly three questions. One, do workers tend to be employed by employers of the same ethnic group; two, what is the structure of the equilibrium wage contract, and three, do more ethnically homogeneous labor markets tend to have different labor contracts than more ethnically...

Heterogeneous firms facing demand-induced price fluctuations imperfectly compete for heterogeneous workers. It is shown that unemployment may arise in equilibrium because of the combination of uncertainty on product price and mismatch between workers’ skills and firms’ job requirements.

We propose a dynamic efficiency wage model with learning by doing. By taking into account the change inthe stock of workers’ knowledge, firms set efficiency wages such that the effort–wage elasticity is not in general equal to one.

In this paper, we present a model of tax evasion in the presence of imperfect auditing. We show that there is a clear link between the degree of observability associated with a given taxpayer or activity and that taxpayer’s optimal declaration strategy with respect to fiscal agency. We also...

We integrate a social norm which associates status to accumulation of capital and consumption into a simple model of endogenous growth. We show that societies which place a greater weight of cultural values on stock of accumulated capital as opposed to consumption will experience fast growth....

In this paper, we introduce firm heterogeneity in the context of a model of non-compliance with minimum wage legislation. The introduction of heterogeneity in the ease with which firms can be monitored for non compliance allows us to show that non-compliance will persist in sectors which are...

Using the Principal-Agent-Supervisor paradigm, we examine in this paper how a tax collection agency changes optimal schemes in order to lessen the occurrence of bribery between the tax collector and the taxpayer. The Principal, who maximizes the expected net fiscal revenue, reacts by decreasing...

Using the principal-agent- supervisor paradigm, this paper examines the occurrence of collusion in a setting where the principal has no information about the supervisor and the agent does not necessarily know the supervisor’s preferences. We formally prove the occurrence of collusion is more...

This paper studies a dynamic model with efficiency wages and adjustment costs associated with hiring and firing decisions. With linear adjustment costs, the optimal efficiency wage and employment are affected by the real interest rate and adjustment costs. When lumpy costs or convex adjustment...

This paper provides a socio-psychological theory of efficiency wage growth. The model blends agency theory with the Forced Savings hypothesis by assuming that firms set an increasing wage profile to minimize shirking costs, and that workers’ effort is positively related to the variation of...