LOS ANGELES—Labor shortages have cut into Amazon.com Inc.’s plan to make one-day delivery standard for members of its Prime loyalty club, delaying its bid to cement its lead in e-commerce and sending costs surging ahead of the all-important holiday season.
The comments from the world’s biggest online retailer come as staffing emerges as a significant pain point for U.S. retailers, already battling supply-chain snarls, product shortages, rising inflation, and rocketing transportation costs.
