How to Avoid Over-Collaboration in the Workplace?

It's hard because if the boss is asking you to be part of a new collaborative team, it is flattering. It seems that the burden is maybe more on managers to avoid doing this to their people than necessarily coming up with ways for people to buffer themselves or to say no. What can managers do fairly simple rules that say other than tracking data over years and trying to figure out something? I mean, what are some basic approaches to avoiding this kind of excessive collaboration from a managerial standpoint?