Generous severance and ensure leaving on as good terms as much as possible. Ahead of time, inventory all systems and ensure logins. We had to let go several b

Generous severance and ensure leaving on as good terms as much as possible. Ahead of time, inventory all systems and ensure logins. We had to let go several behavior-related folks over the years, and only 1 case where we really needed them after the fact: never for their knowledge, just 1 account access. If you hire smart people, and build in sane ways, few people are truly indispensable, esp around code. Having experienced that reinforces the idea of building a professional team, not hiring rockstars.