I.e. their paycheck will show $16,666 per month at the top line, a bunch of state, federal, maybe local taxes, disability and social security (also basically taxes), etc. and then roughly $10,500 at the bottom line depending on your situation.\
Edit: sometimes people include stock in their pay. This can be perfectly reasonable (guaranteed grants in a publicly traded company) or complete BS (pretending your startup will sell for 1B+ even though you might as well just buy lottery tickets)