See this video on the top reasons to sign a buyers agency agreement:

Rather than have an implied oral agreement with a buyers agent, you will be in a much stronger position if you have a written agreement. A written agreement provides clearly specified obligations and duties, and can even have a clause that will outline what happens if one or both parties wants out of the agreement.

Kathleen Chiras is the associations manager and web manager for the Colorado Exlusive Buyer Agents Association.