Eager to boost sales, relieve workers from mundane tasks and respond to the ongoing labor shortage, retailers and supermarkets are adding robots to their store aisles. Outfitted with cameras and sensors, autonomous inventory robots that can verify price signs and look for out-of-stock items are being deployed at big box stores like BJ's Wholesale and Walmart-owned Sam's Club . Inventory is one of the biggest challenges retailers face. Missed sales from empty shelves and out-of-stock items cost U.S. retailers $82 billion in 2021, according to NielsenIQ. So what impact will inventory robots have on U.S. retailers and the livelihood of its workers?