The investigation stems from concerns that the pressures of meeting billing targets are affecting the well-being of lawyers. Reports have suggested that pro bono participation is down because lawyers in large firms have little time for voluntary work. As salaries rise, so do the expectations of lawyers by their firms. Some have complained that their worth is judged in terms of volume rather than quality. The investigation is headed jointly by Jeffrey Liss, chief operating officer of leading national firm Piper Marbury Rudnick & Wolfe, and Anastasia Kelly, general counsel for Sears Roebuck & Co.