HOUSTON, TX, US-SEPT 16, 2017:Close-up facade and logo of Costco storefront. Costco Wholesale Corporation is largest membership-only warehouse club in US. It has total of 705 warehouses worldwide Tout icon

6 Secrets I Learned While Working at Costco

Costco is a great place to shop, but it's also a great place to work. Here's what I learned while working there in 2015.