Joseph G. Shores, president of Berkley Select, will undertake the additional responsibility as president of Monitor Liability Managers, according to parent company W.R. Berkley Corp. in Greenwich, Conn.

Shores succeeds Sandra C. Nelson, who the company said will be involved in other activities within the corporation’s group of companies.

Based in Rolling Meadows, Illinois, Monitor Liability Managers is an underwriting management company specializing in executive and professional liability insurance.

Shores joined W. R. Berkley Corp. in 2007 with the launch of Berkley Select, and will remain Berkley Select’s president in addition to his new responsibilities at Monitor. Prior to joining W. R. Berkley Corp., Shores was responsible for regional specialty lines underwriting operations at another national property/ casualty insurer, including the executive management of a significant professional liability operation. He has 25 years of experience in the insurance industry with significant specialty, professional liability and excess lines experience.

Monitor’s public company directors’ and officers’ liability business will report to Berkley Professional Liability, which is under the direction of John Benedetto, president.