More corporate directors and officers are interested in the insurance programs their companies use to protect them against potential litigation, Towers Watson finds.

Its 2011 Directors and Officers Liability Survey also found that many U.S. public companies as well as private and nonprofit organizations increased their D&O liability limits last year.

More than two-thirds (69 percent) of respondents reported they received an inquiry regarding the amount and scope of their D&O insurance coverage in 2011, a sharp increase from 57 percent in 2010. The survey also found 25 percent of public companies surveyed and 14 percent of private and nonprofit companies said they had increased their D&O limits at renewal. The survey was based on 401 public, private and nonprofit organizations that purchased D&O liability insurance in 2011.