> Work out of a separate office, ideally with a door.
A small-apartment version of this is to have a work laptop at home (or carry it home from in-office), but to keep it in a drawer when not in use. Same with a work smartphone.
For people who have to be reachable in emergencies, a real radio pager (best privacy, still company-issued, and it could maybe also go in the drawer), or their preferred automated emergency contact method to their personal smartphone (SMS, email, app). Optionally with a de jure on-call human in the loop. Or just a work-issued smartphone or tablet that can be configured in software to only alert on emergencies.
When emergency contacting personally-owned devices, to minimize taint with business information, the only information conveyed is to check work laptop within X minutes. (The company should also have be a rock-solid log of each such contact, for various reasons.)
(One early startup, where I was leading engineering and had bespoke MVP appliances as part of a factory production line halfway around the globe, and I hadn't yet set up a better alerting method, I just used an iPad for this. The iPad had 2 purposes, about the only things it could do: (1) compartmentalize the sketchy videoconferencing app we used, away from the Linux laptop that was early-startup powerful; (2) be a fairly discreet "picture frame" display in the evening, so that I'd notice emails from factory management or our alert system. With more time this could've been polished to be better for my nerves, but it was still definitely better than having the work laptop visible 24/7.)
A small-apartment version of this is to have a work laptop at home (or carry it home from in-office), but to keep it in a drawer when not in use. Same with a work smartphone.
For people who have to be reachable in emergencies, a real radio pager (best privacy, still company-issued, and it could maybe also go in the drawer), or their preferred automated emergency contact method to their personal smartphone (SMS, email, app). Optionally with a de jure on-call human in the loop. Or just a work-issued smartphone or tablet that can be configured in software to only alert on emergencies.
When emergency contacting personally-owned devices, to minimize taint with business information, the only information conveyed is to check work laptop within X minutes. (The company should also have be a rock-solid log of each such contact, for various reasons.)
(One early startup, where I was leading engineering and had bespoke MVP appliances as part of a factory production line halfway around the globe, and I hadn't yet set up a better alerting method, I just used an iPad for this. The iPad had 2 purposes, about the only things it could do: (1) compartmentalize the sketchy videoconferencing app we used, away from the Linux laptop that was early-startup powerful; (2) be a fairly discreet "picture frame" display in the evening, so that I'd notice emails from factory management or our alert system. With more time this could've been polished to be better for my nerves, but it was still definitely better than having the work laptop visible 24/7.)