Four months ago, employees at many U.S. companies went home and did something incredible: They got their work done, seemingly without missing a beat. Executives were amazed at how well their workers performed remotely, even while juggling child care and the distractions of home. Twitter Inc. TWTR -2.34% and Facebook Inc., among others, quickly said they would embrace remote work long term. Some companies even vowed to give up their physical office spaces entirely. READ MORE