Uber and Lyft have lost a combined market value of $20B+ in the week since the US labor secretary signaled intent to examine the classification of gig workers

Uber and Lyft have lost a combined market value of $20B+ in the week since the US labor secretary signaled intent to examine the classification of gig workers  —  Ride-share group’s employment model faces scrutiny from labour secretary Marty Walsh  —  Shares in Uber continued a weeklong tumble …