One of the biggest confusions regarding boundaries in the work place has to do with how responsibility works.
In the work place, relationships and situations, get confusing when someone feels responsible “for” another persons’ feelings, attitudes, behaviors, choices or work. For example, when you say “no” to someone who wants something from you, like your time or a favor, and “they” then get angry, or have some sort of negative reaction, that reaction is their responsibility, not yours. If they are throwing a temper tantrum or dishing out the guilt because they did not get what they want, their response is their issue, not yours.
We are not responsible “for” someone does not mean that we have no responsibility. We are responsible “for” ourselves, but also “to” others. If someone we work with has a problem, or is making destructive choices, or is hurting us in some way or the company, we have a responsibility “to” that person to tell them, try to help them take responsibility for themselves, and offer them helpful options.