Despite ample criticism of late, markets still work. Anyone who allows real-world evidence to inform their opinions knows that issues of supply and demand are best sorted out through the interactions of many disparate actors rather than a single bureaucratic declaration. So why not use the labour market to determine the optimal level of immigration? In the conclusion of his two-part series on immigration, Herbert Grubel lays out the economist’s case for why employers, rather than bureaucrats or politicians, should be the ones deciding on the people and skills Canada’s economy actually needs, and thus collectively shaping the flow of immigration to Canada.