Pedro S. Martins

Returns to education and wage equations

The paper shows why considering a number of education-dependent covariates in a wage equation decreases the coefficient of education in that equation. This result is illustrated empirically with a meta-analysis for Portugal. The education coefficient decreases when covariates are used that can be considered post-education decisions; on the other hand, it is independent of sample size, tenure and whether hourly or monthly wages are used. These results support the use of a simple specification of the Mincer equation for the study of the total returns to education.

Rent Sharing Before and After the Wage Bill

Many biases plague the analysis of whether employers share rents with their employees, unlike what is predicted by the competitive labour market model. Using a Portuguese matched employer-employee panel, this article is one of the first to address these biases in three complementary ways: (1) Controlling directly for the fact that firms that share more rents will, ceteris paribus, have lower net-of-wages profits. (2) Instrumenting profits via interactions between the exchange rate and the share of exports in firms total sales. (3) Considering firm or firm/worker spell fixed effects and highlighting the role of downward wage rigidity. These approaches clarify conflicting findings in the literature and result, in our preferred specifications, in significant evidence of rent sharing (a Lester range of pay dispersion of 56%), also shown to be robust to a number of competitive interpretations.

Dismissals for cause: the difference that just eight paragraphs can make

This article presents evidence about the effects of dismissals‐for‐cause requirements, a specific component of employment protection legislation that has received little attention. I study a quasi‐experiment generated by a law introduced in Portugal: out of the 12 paragraphs in the law that dictated the costly procedure required for dismissals for cause, eight did not apply to small firms. Using matched employer‐employee longitudinal data and difference‐in‐differences methods, I examine the impact of that differentiated change in firing costs upon several variables. The results do not indicate robust effects on job or worker flows, although some estimates suggest an increase in hirings. However, firms that gain flexibility in their dismissals exhibit sizable increases in their relative performance. This finding suggests that reducing firing costs of the type studied here increases workers’ effort.

Is there a Return-Risk Link in Education?

Risk averse investors have to be compensated in higher expected returns when facing investments with higher risk. Education is an important investment therefore we use the results for 16 countries to test the positive relationship between return to education and the risk involved in this investment. It seems that most of the countries fit the pattern well: higher risk - higher return.

Paying More to Hire the Best? Foreign Firms, Wages and Worker Mobility

In the context of the debate on the labour-market consequences of globalisation, we examine worker mobility in order to identify the wage differences between foreign and domestic firms. Using matched employer-employee panel data for Portugal, we consider virtually all spells of interfirm mobility over a period of ten years. We find that foreign firms offer significantly more generous wage policies, although there is also a (smaller) selection effect. The results are robust to the consideration of wage growth differences, the case of displaced workers and different subsets of workers.

HETEROGENEITY IN REAL WAGE CYCLICALITY

This paper presents evidence that real wage cyclicality can be a particularly heterogeneous parameter, depending on different worker characteristics and also on the specific stage of the business cycle. Using matched employer-employee panel data for Portugal covering the period 1986-2004, real wages are shown to be considerably more procyclical during recessions than during expansions, resulting in relatively moderate overall levels of cyclicality (about -0.6). However, most of the procyclicality during downturns is shown to be driven by the younger employees, as older workers appear to be insulated from the business cycle. Moreover, movers between firms typically display higher cyclicality than workers that stay in the same firm, regardless of whether the latter move or not between job levels. Most results also hold when considering basic wages instead of total wages, except that the procyclicality of movers during downturns is substantially higher.

External recruitments and firm performance

In the context of tournament theory, and drawing on a panel data set of several firms and their employees, evidence is presented of a negative relationship between the share of external recruitments for top management positions and firm productivity.

Do Foreign-Owned Firms Provide Better Working Conditions Than Their Domestic Counterparts? A Comparative Analysis

This paper analyses to what extent working conditions in foreign-owned firms differ from those in their domestic counterparts. It makes three main contributions. First, we replicate the consensus in the empirical literature by applying a standardised methodology to firm-level data for three developed (Germany, Portugal, UK) and two emerging economies (Brazil, Indonesia). We show that, consistent with previous evidence, foreign-owned firms offer substantially higher average wages than domestic firms and that this difference is particularly important in emerging economies. Second, we show that these positive wage effects of foreign takeovers reduce in size when controlling for changes in the composition of the workforce, although they tend to remain positive and statistically significant. However, the wage effects associated with worker movements from domestic to foreign firms are potentially important, particularly in emerging economies. Third, we look not only at wage outcomes but also consider other working conditions such as working hours, job stability and union coverage. We find that foreign takeovers of domestic firms tend to have a small positive effect on wages, but little effect on other aspects of working conditions.

Worker Churning and Firms’ Wage Policies

If a random firm were to increase its wages, would that decrease the firm’s churning (“excessive” worker reallocation)? Although the trade-off between wage and churning costs has received attention in both the labour and HRM literatures, there seems to be no evidence about the causal impact of wages upon churning. This paper seeks to fill that gap by considering detailed Portuguese matched employer-employee panel data and different identification methods. After presenting comprehensive evidence about job and worker flows and churning, we find that even models based on within-firm time differences do still generate the negative association between wages and turnover found in most research. However, that result no longer holds when we consider instrumental variables based on minimum wages determined by collective bargaining arrangements. One possible interpretation of our finding is that workers’ effort may not be sufficiently sensitive to wages: employers may replace workers priced out of the labour market with more skilled individuals, so that churning does not fall.

Downward Wage Rigidity in a Model of Equal Treatment Contracting

Following insights by Bewley (1999a), this paper analyses a model with downward rigidities in which firms cannot pay discriminately based on year of entry to the firm, and develops an equilibrium model of wages and unemployment. We solve for the dynamics of wages and unemployment under conditions of downward wage rigidity, where forward-looking firms take into account these constraints. We show that there is a frontloading incentive that leads to a simple solution in the case of certainty. Using productivity data from the postwar US economy, we analyse the ability of the model to match certain stylised labour market facts.