Between 1977 and 1997, there was a precipitous decline in the proportion of US workers with median education (12 years or less) who were represented by a labor union--from 29 to 14 percent; the unionization proportion declined much less among workers with above-median education (19 to 13 percent). The union wage premium also declined for workers with basic education, from 58 to 51 percent, whereas it rose slightly for better-educated unionists,...