Do Wages Continue Increasing at Older Ages? Evidence on the Wage Cushion in the Netherlands

In this study, we investigate the anatomy of older workers’ wages. The central question is whether the wage cushion—i.e., the difference between actual wages and collectively agreed-upon (maximum) contractual wages—contributes to the fact that wages continue increasing at older ages. We follow the wages of individual workers in twenty-two sectors of industry in the Netherlands using administrative data for the period 2006–2010. In the public sector, we find no evidence of a wage cushion. Wage scale ceilings set in collective agreements are guiding for older workers’ wages, and workers earning a contractual wage equal to a wage scale ceiling are not compensated with higher additional wages. In the private sector, we do find evidence of a wage cushion. Wage scale ceilings are less restrictive and workers earning a contractual wage exceeding the highest wage scale ceiling experience higher contractual wage growth. The private sector wage cushion enhances wage differentiation and allows for wages that continue increasing at older ages.     

The potential of African trade integration – Panel data evidence for the COMESA-EAC-SADC Tripartite

ABSTRACT

The COMESA-EAC-SADC Tripartite FTA, formed in 2011, is supposed to be a milestone towards Africa's continental trade integration. This study analyzes the impact of regional integration among the Tripartite countries on their bilateral imports before that date to evaluate the latest integration efforts. We estimate an extended gravity model on a large panel of 51 African countries using yearly observations from 1995 to 2010. We proxy existing formal trade barriers by sample average tariff data on imports from the world as well as indicator variables for the membership in regional FTAs. We consider different estimation techniques and discuss distinct sets of fixed effects. The PPML regression results indicate that remaining tariffs are significantly negatively correlated with imports throughout the preferred multiplicative models. An FTA status does not show a clear-cut import enhancing effect. In the specifications that control for country-year effects, the EAC coefficient is positively correlated with imports, and the COMESA and SADC FTA membership show a positive relation to imports within some reduced-sample robustness checks.     

Subsidizing Technological Innovations in the Presence of R&D Spillovers

Abstract. We analyze a situation where a principal wants to induce two firms to produce an output, for example electricity from renewable energy sources. Firms can undertake non-contractible investments to reduce production cost of the output. Part of these investments spills over and also reduces production cost of the other firm. Comparing a general price subsidy and an innovation tournament, we find that the principal's expected cost of implementing a given expected output is always higher under the tournament, even though this scheme may lead to more innovation.     

WAGE FLOORS,IMPERFECT PERFORMANCE MEASURES,AND OPTIMAL JOB DESIGN

We analyze the effects of wage floors on optimal job design in a moral‐hazard model with asymmetric tasks and imperfect aggregate performance measurement. Due to cost advantages of specialization, assigning the tasks to different agents is efficient. A sufficiently high wage floor, however, induces the principal to dismiss one agent or to even exclude tasks from the production process. Imperfect performance measurement always lowers profit under multitasking, but may increase profit under specialization. We further show that variations in the wage floor and the agents' reservation utility have significantly different effects on welfare and optimal job design.