Furthermore, by increasing the income of drop-outs relative to graduates, higher minimum wages may reduce the relative return to higher levels of education. Empirically, the balance of international evidence suggests that increasing minimum wages has a negative impact on the enrolment of teenagers in education but not of youth in their early twenties, and that the negative effect is particularly strong for youth with very low skills (Neumark and Wascher, 1995, Landon, 1997, Chaplin et al., Although absolute levels are informative, the ratio of the minimum wage to the median wage is more appropriate when making international comparisons.