This story originally published on April 10, 2018.

Secretaries. Nurses. Elementary school teachers.

Historically, we think of these as "female" jobs. But that's not only an assumption — it's also the actual job market.

"Occupational segregation" is the term academics use to refer to this split, with women historically relegated to lower-paying, "support" jobs (think secretary or office manager) and men taking the higher-paying, "glamour" jobs (think boss, manager, etc.).

The split starts even earlier than you'd think. We can even see this happening with teenage workers, says Yasemin Besen-Cassino, sociology professor at Montclair State University and author of "The Cost of Being a Girl."

Besen-Cassino says occupational segregation happens as early as age 14. Boys pick up higher-paying odd jobs like yard work or snow removal, while girls stick to babysitting. In later years, boys tend to move into shift work and minimum-wage jobs earlier than girls do.

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