SAN FRANCISCO — Bingham McCutchen has joined the ranks of firms that are tweaking their compensation systems, saying Monday it is moving to a “merit lockstep” system that will keep base pay on lockstep but introduce a merit component into bonuses.

Several firms this year have announced a move away from lockstep compensation, including Howrey , Orrick, Herrington & Sutcliffe and Townsend and Townsend and Crew . Nixon Peabody and Pillsbury Winthrop Shaw Pittman have lowered salaries for some associates in each yearly class, resulting in a de facto departure from lockstep. Jones Day says it has always used a merit-based system, and DLA Piper has said it is considering a departure from lockstep.