>and a reasonable assurance that assigned duties, projects, clients, and other workload-related details are managed during the worker’s absence. I read that as

>and a reasonable assurance that assigned duties, projects, clients, and other workload-related details are managed during the worker’s absence. I read that as if you are in a role with no backup or reasonable cover for your duties you can never take vacation. As I often find myself in that position I'd shy away from "unlimited vacation" roles.