Building collaboration and reaching consensus can be a time consuming activity. There will be times when an uncooperative individual makes life miserable for everyone in the workplace and your best efforts to mitigate the situation appear to be failing. Stick to being predictable in the leadership role you play to complete the action plan as originally announced to fulfill your declared expectations. In this manner, the consistency of your approach with a clear articulation of the desired end state will assist the uncooperative individual to unequivocally see both the goal and the boundaries.