In summary, stainless steel does not rust because it is sufficiently reactive to protect itself from further attack by forming a passive corrosion product layer. (Other important metals such as titanium and aluminum also rely on passive film formation for their corrosion resistance.)
White Collar. White-collar workers usually perform job duties in an office setting. They are highly skilled and formally trained professionals. Many white-collar workers, such as accountants, bankers, attorneys and real estate agents, provide professional services to clients.
Essentially, the exemption covers most white-collar jobs that are typically paid by salary. In other words, employers are generally not required to pay overtime to salaried white-collar professionals for working more than 40 hours in a particular workweek.