20 40 60 80 time since entry on labor market (quarter) Wage In apprenticeship - Unskilled wage Skilled wage Log wage difference0 .05 .1 .15 .2 .25 Log wage difference 3 3.5 4 4.5 5 Log wage 0 20 40 60 80 time since entry on labor market (quarter) ... Wage In apprenticeship Unskilled wage Skilled wage Log wage difference