The hidden cost of Black Friday

The Black Friday chaos we used to see in storefronts and shopping malls has moved to logistics centers and warehouses all over the world:

Hundreds of thousands of employees work long hours — often in tough conditions — to get through the holiday rush.

The big picture: E-commerce's growing share of the retail market, continued COVID precautions and an extended holiday shopping season means we might see shorter lines and smaller crowds in stores on Black Friday.

But the type of strain Black Friday used to place on in-store retail workers...