The National Longitudinal Survey of Youth 1979 is a survey of 9,964 young men and women who were ages 14-22 when first interviewed in 1979 and ages 35-43 when interviewed most recently in 2000. (Respondents were born in 1957-64, the later years of the "baby boom.") Findings indicate the average person held nearly 10 jobs from ages 18-36; more than two-thirds of these jobs were held in the first half of the period, from ages 18-27; the average individual was employed during nearly 76 percent of the weeks occurring from age 18-36; generally, men spent a larger percent of weeks employed than did women; annual percent growth in inflation-adjusted hourly earnings was fastest from ages 18-22; growth rates in earnings generally were higher for those who obtained more education; and about 1 in 5 individuals ages 35-43 in 2000 reported that they had received a promotion from their employer between 1997-99. (An explanatory note covers sample, work history data, interaction between time and age in a longitudinal survey, and definitions. Six tables are attached.) (YLB)