MM&P Leadership
Donald Marcus, International President
Don Marcus has served as president of the International Organization of Masters, Mates & Pilots since 2013.
In this role, he works with the other members of the MM&P General Executive Board and alongside allied labor unions and organizations to protect the rights and working conditions of members of the seagoing maritime community and America’s working families.
During his seagoing career, he sailed in all licensed deck officer capacities aboard U.S.-flag ships in the international trade. He was commissioned in the U.S. Naval Reserve, receiving his Honorable Discharge in 1986. His last shipboard assignment was as captain of the MV Sea-Land Pacer.
Don has been a union member throughout his working life, having joined MM&P upon graduating from the U.S. Merchant Marine Academy, Kings Point, NY, in 1979. He is a graduate of the University of California, Hastings College of the Law and has been admitted to the California Bar Association. Originally from San Francisco, he resides in Baltimore County, Md. He is married with three children.
410-850-8700 ext. 122
Donald F. Josberger, International Secretary-Treasurer
Don Josberger has served as secretary-treasurer of the International Organization of Masters, Mates & Pilots since 2019.
Prior to his current post, he was elected vice president of Atlantic Ports, a position he held for six years.
From 1999 to 2013, he sailed as captain and chief mate on Sea-Land, CSX and Horizon Lines vessels.
He graduated from the State University of New York Maritime College, Fort Schuyler, in 1989.
He is a member of The Marine Society City of New York.
410-850-8700 ext. 116