Americans born in the early 1980s held an average of 7.8 jobs from age 18 through age 30, according to the U.S. Bureau of Labor Statistics. Individuals held more jobs at younger ages, and the number of jobs held declined as individuals aged.
The length of time a worker remains with an employer increased with the age at which the worker began the job. Of the jobs that workers began when they were 18 to 24 years of age, 58% of those jobs ended in less than a year and 91% ended in  less than 6 years. Among jobs started by 25-30 year olds, 33% ended in less than a year, and 61% ended in less than 6 years.
Job duration is also related to education. Sixty-five percent of jobs started by high school dropouts while age 18-24 ended within a year, compared to 55% of jobs started by those with a bachelor's degree.