LIFE How old do you have to be to work at Costco? InsuNews May 23, 2022 How old do you have to be to work at Costco? All Costco employees must be at least 18 years old. See also Can you cancel your Invisalign treatment? Continue Reading Previous What does Home Depot pay Texas?Next Can you smoke at Globe Life Field? More Stories LIFE What is the best insurance policy? InsuNews May 23, 2022 LIFE What is the richest insurance company in the United States? InsuNews May 23, 2022 LIFE Who is the biggest insurance underwriter for? InsuNews May 23, 2022