The purpose of the thesis is to investigate the impact of patterns of trade on the structural composition of an economy. We show that trade affects an economy’s productivity by shifting labor across broad sectors and reallocating resources across firms within sectors. In the first chapter, we examine how the introduction of a labor subsidy in the manufacturing sector affects manufacturing employment in a Ricardian trade model. Furthermore, the trade-off between subsidy distortions, dynamic productivity gains in the manufacturing sector and gains from trade are examined. We derive a critical labor subsidy. If a labor subsidy is larger than this critical subsidy, TFP growth in the manufacturing sector is higher than in the agricultural secto...