Tipping Gone Wild! Marketing Expert On When It’s OK To Not Tip For a Good Or Service

“We’re Momming Today” with Ismail Karabas, marketing professor at Murray State University in Kentucky, who has done extensive research on the services industry and the impact of tipping. Karabas says tips are always appreciated, but not always necessary, even though it may feel like it when most merchants’ point-of-sale devices offer a tipping option – that sometimes starts at 20 percent.