If you were hoping to get shopping delivered via Shipt today, you may be out of luck. Shipt, which is owned by Target, pays gig economy workers to deliver goods from brick-and-mortar stores to consumers’ homes around the country. Those workers aren’t staff, so they don’t get a salary or hourly wage. They’re paid by the job. Shipt is now planning to expand its use of an algorithm to determine how much they get paid. It’ll take into account a lot of factors, like how busy a store is and how bad traffic is. But the calculation is opaque, and workers would like more transparency. They’re boycotting the app today. Jack Stewart speaks with Marketplace’s workplace culture reporter, Meghan McCarty Carino.