A white-collar worker is someone who has a non-manual job; especially someone who works in an office.
Typically, people who wear shirts with white collars to work – such as office workers and office managers.
Example of use:
According to China Daily, a new report on the health of Chinese white collar workers shows that 76 percent of them are in poor health and are biologically 10 years older than their actual age.
See also, blue-collar workers
Image by Steve Parker