Good news for companies footing the bill for liability coverage for corporate officers and directors: Thanks primarily to excess capacity in the insurance market, companies should be able to get more D&O coverage for less money.

Driven by increasing capacity in the insurance market as a whole and by decreasing frequency and severity of losses of class-action lawsuits, D&O premiums have fallen by an average of nearly 30 percent since the end of 2003, according to Advisen, an information service for the commercial insurance industry.