Why would you assume that people were forced to test if asymptomatic? Also, there's a literal difference between "asymptomatic" and "Pre-symptomatic" but we have no way of knowing which one a person is until after the fact. Since you are contagious prior to the onset of symptoms and we can't predict who will or won't eventually have symptoms, it wouldn't make sense to ignore close contacts in the workplace, anyway (if the store did require all employees to test). Allowing an "asymptomatic" employee who tests positive to come to work and later turns out to really have been pre-symptomatic is a very bad idea for any employer since it risks a wider outbreak among employees and customers (if it's a customer-facing job). Many employers still offer paid leave for positive tests, but I know that some have changed their policy to only offering that to vaccinated employees. I don't know what Walmart's policy is regarding pay for employees who test positive, but closing the store for a day or 2 to make sure it's clean and hopefully have enough employees available to adequately staff the store doesn't seem like a bad idea to me. Plus, as the article states, there are employees still showing up to work to restock shelves while the store is closed and someone will need to cover shifts for the employees who are sick, so a temporary closing gives those employees who are healthy but not allowed to work to get some much-needed time off before taking on extra hours on the heels of a busy holiday season.