The relationship between wages and productivity: rules or exceptions? Evidence from the Italian economy

Purpose – This study analyses the effects on productivity of Performance-Related Payments (PRP) and unions, and examines to what extent heterogeneity between firms characterises these impacts. Design - For the Italian economy, the study presents firm-level quantile regressions for Total Factor Productivity (TFP) and controls for various observed characteristics of firms, worker composition and labour relations. Findings - The paper shows the significant impact of PRP and unions on the whole economy and on firms operating in the manufacturing industries. In these industries, the uniform incentive effects of PRP but the increasing impact of unions are estimated along the productivity distribution. Conversely, the role of management - significant in all sectors- is more efficacious in prospering large firms operating in services. Research limitations – The adoption of PRP schemes and the presence of unions maybe endogenous to firms’ productivity, and our estimates do not prove causal links but simply suggest correlation associations. Practical implications - The limited incentive effects of PRP schemes in services contribute toward explaining the slowdown in Italian productivity, whereas the role of unions is quite uniform among sectors. Originality- The paper addresses the hitherto poorly developed issue of firm heterogeneity and TFP, and offers the first Italian study of PRP and unions, which covers all dimensional classes of firms and private non-agricultural sectors of the Italian economy.