This is Brian -- I wrote the article. We are closed on Sunday but its not dogmatic in nature. We want to make sure that everyone at Chick-fil-A has a great work/life balance. Occasionally we need to do some work on a Sunday but we try to architect and engineer in a manner that supports business-hours-friendly deployments, or scheduled deployments over night to protect that. This is truly a first-class design consideration. In my 14+ years at Chick-fil-A, I have only worked a handful of Sundays for any reason. Its a tribute to leadership at all levels and a great company culture that values people (and their need for times to rest).

They’re really reasonable about it... you do what you need to do.

That being said, it’s really REALLY nice to mute pagerduty for a whole day every week.