Jennifer DeVito, who used to wake up 4:10 a.m. so she could catch a shuttle to her office in Santa Clara, gardens at home in Folsom, Calif., (Jason Henry/The New York Times)

Jennifer DeVito, who used to wake up 4:10 a.m. so she could catch a shuttle to her office in Santa Clara, gardens at home in Folsom, Calif., in April. After the coronavirus upended the workplace in 2020, leaving roughly 50 million people working from home by that May, the 9 to 5 changed to something more fragmented for many of them.