One of the most unfair and frustrating experiences an agent can have is to work aggressively marketing a property on behalf of the owner, only to have the owner lower the price and give the listing to another agent. These properties can sell quickly, leaving the agent that had done all the work out of luck.
You may want to consider talking to your manager or broker about adding a clause like the one below to protect yourself from the situation described above.
“Seller agrees to give the listing to Agent at the lowest price the property is offered for sale both during the listing period and for a period of 90 days after expiration of the listing period. Therefore, if Seller lowers the price at any time within 90 days after expiration of the listing period, Seller agrees to give the agent an opportunity to market the property at the lower price by extending the Listing Agreement for a period of an additional 6 months after price is lowered.”