Unexpected events and environmental impact not planned for are common during project implementation. This article explores how unexpected events are dealt with in projects using qualitative case study data from four different cases. Results show four different approaches to deal with unexpected events: innovative action, applying detachment strategies, setting up intensive meeting schedules and negotiating project conditions are common approaches to deal with the unexpected events. The discussion shed new light on one common situations during project execution – i.e. dealing with unexpected events – that is not normally included in the best practice models of project management.