15 jobs in the US that are chronically underpaid

And if you have one of the most underpaid jobs in America, you could be missing out on tens of thousands of dollars more a year.

Using pay data from 1.3 million US employees who submitted their current base pay to Glassdoor's Know Your Worth tool between October, 2016 and October, 2017, Glassdoor found that the typical worker is paid about 13.3% less than their market value.

To calculate someone's market value (which the Know Your Worth tool recalculates for participating members each week), Glassdoor's machine learning algorithms take into account current job title, base salary, employer, work location, industry, typical job transitions, years of relevant experience, and current state of the local job market.

Glassdoor's chief economist Dr. Andrew Chamberlain posits that a major reason Americans are so chronically underpaid comes down to a lack of negotiation. Glassdoor found that three in five US employees did not negotiate their salaries upon being offered a job.

The key to not being chronically underpaid is to not only know your market value, but to also use this knowledge to help negotiate your pay, whether it be a raise or in a new role.

If you have one of the most underpaid jobs in America, it may be time to get to work: