Seattle is kind of an anomaly in a lot of ways where people actually pay attention to the laws and follow them for the intended purpose more than their own benefit. Anecdotal evidence, when they were fixing an expansion joint on I-90 a few years ago they needed 80k people not to drive that week over I-90. They estimated that 130k people worked from home that week. Employers were totally cool about it too. "yeah work from home this week".