I disagree. Once every few years sounds acceptable. Unannounced is unacceptable, but provided that you have your house in order and everyone knows what's goin

I disagree. Once every few years sounds acceptable. Unannounced is unacceptable, but provided that you have your house in order and everyone knows what's going on beforehand, it just becomes a simple planning exercise for the manager. Mileage may vary depending on how responsible the employee is, and company size; team of 3... maybe not. team of 5,6,7+... probably doable.