In this article we re-examine the relationship between group-based profit sharing and productivity. Our meta-regression analysis of 313 estimates from 56 studies controls for publication selection and misspecification biases and investigates the impact of firm level unionisation and national...

1. A bibliometric analysis of what do unions do? -- 2. Research synthesis through meta-regression analysis -- 3. Unions and productivity : direct estimates -- 4. Unions and productivity growth -- 5. Unions and productivity : investment channels -- 6. Unions and productivity : employee behavior...

A number of conflicting theoretical hypotheses have been advanced regarding the impact of unions on investment behaviour. The net impact of unions on investment is thus an empirical issue. In this article, the available empirical literature is reviewed. In addition, new evidence of the impact of...

The impact of unions on productivity is explored using meta-analysis and meta-regression analysis. It is shown that most of the variation in published results is due to specification differences between studies. After controlling for differences between studies, a negative association between...