Wage structure effects of international trade in a small open economy: the case of Belgium

This paper investigates the impact of international trade on wage dispersion in a small open economy, Belgium. It is one of the few to: (i) use detailed, matched employer-employee data to compute industry wage premia and disaggregated industry-level panel data to examine the impact of changes in international trade on changes in wage differentials, (ii) simultaneously analyse both imports and exports, and (iii) examine the impact of imports according to the country of origin. Looking at the export side, we find (on the basis of the system generalized method of moments estimator) a positive effect of exports on industry wage premia. The results also show that import penetration has a significant and negative impact on industry wage differentials. However, the detrimental effect of imports on wages is found to be significantly greater when imports originate from low- and middle-income countries than from high-income countries.