Pennymac Financial Services Inc. employs nearly 4,400 workers nationwide. But its headquarters in Westlake Village and sales offices in California, Nevada, Florida, Texas and Hawaii have all sat vacant since early March. That’s because Pennymac has shifted about 90 percent of its workforce to a remote model to tamper the spread of COVID-19. Pennymac isn’t alone. California, like many states, is prohibiting gatherings of more than 10 people in an enclosed area, pushing office employers of all kinds into a forced experiment in working at home. In the Valley, business service firms such as financial lenders, accountants, consultants and insurance brokerages are learning how to complete their normal tasks with technology from outside the office. Read the full story in the April 13 issue of the San Fernando Valley Business Journal.