Historical content corresponding to activity of a user in at least one social networking service is aggregated. The historical content indicates a plurality of collaboration partners with whom the user collaborated via the at least one social networking service in an occupation context. Based on the aggregated historical content, at least one of the collaboration partners can be identified as at least one priority collaboration partner. Whether the user currently is not in a facility where the user works can be automatically determined. Responsive to determining that the user is not in the facility where the user works, a message indicating that the user is not in the facility where the user works can be automatically sent to the at least one priority collaboration partner.