As negotiators, we all believe that when we reach the end of a  negotiation and have a deal that both sides can agree to, the deal is  done. 

This is the time that we start to pack up our negotiation styles  and negotiating techniques and move on to our next negotiation. However,  there will be those times that things don’t turn out the way that we thought that they would. What can happen is that once the deal is done, there is always the possibility that the other side will demand a renegotiation of the deal. This can both surprise and anger you – why did they agree to deal if they now want to renegotiate it? 

When this happens, you need to keep your anger under control and follow  the following guidelines on how to proceed with re-negotiating with the  other side.