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Examples of this are:
1. Call coworkers by a title and their surname, such as Mr. Smith or Ms. Johnson. Addressing colleagues in a formal manner makes a point of the fact that your relationship is professional, not personal.
2. Decline invitations to non-company-sanctioned after-hours events. Holiday parties or company mixers are fine, but a group get-together after work on a random Tuesday opens up the possibility of personal conversations.
What is maintain boundaries with colleagues