If you find yourself struggling with how much to tip your hairstylist or whether you should tip the local barista, you're not alone.
Andy Hafenbrack, professor of management at the University of Washington's Foster School of Business, still calls his father for tipping advice. Hafenbrack lived abroad for a decade before moving back to the United States three years ago, and he's still trying to wrap his head around tipping norms.
"Do I tip the person who changed out my garage door opener?" Hafenbrack asked his father the other week. "I just didn't know." (His father said no.)
