Last month the unemployment rate climbed above 10% for the first time in more than a quarter century. Less noticed is that male workers crossed this same threshold six months earlier. Since the U.S. became the world's dominant economic power, no downturn has fallen more disproportionately on one gender.

The unemployment rate for men, 11.4%, based on seasonally adjusted data from the Bureau of Labor Statistics, outpaces the rate for women, 8.8%. We now have the largest jobless gender gap since tracking became possible in 1948....