Herman B. Brotman, 75, a retired assistant commissioner of the administration on aging in the old Department of Health, Education and Welfare, died of cancer June 15 at Fairfax Hospital.

Mr. Brotman, a resident of Falls Church, began working for the federal government in 1935 in the Department of Labor. One of his first assignments was to help draft the Social Security Act, which became law that year. Much of his subsequent career concerned the elderly.

At HEW, Mr. Brotman helped draft the Older Americans Act of 1965. The administration on aging was set up to carry out its provisions. In 1973, its functions were transferred elsewhere in the department and Mr. Brotman retired.

In later years, Mr. Brotman was a consultant to House and Senate committees on aging, to the Virginia Office on Aging and to various local agencies concerned with the elderly. He also was a consultant to the Mitre Corp. in McLean.

Mr. Brotman was born in Philadelphia and reared in New York. He graduated from the City College of New York and earned a master's degree in education and economics there. He moved to Washington in 1935 and worked for the Social Security administration after it was established.

During World War II, he worked for the War Manpower Commission and then served in the Army in Europe. After the war he was a civilian employe of the military occupation authorities in Austria, where he became chief of labor and social administration in the American sector. When a civilian government was installed he became the labor attache in the U.S. Embassy.

Mr. Brotman returned here in 1952 and joined HEW when it was formed the next year.

For his service in Austria he received the Meritorious Civilian Service Award.

Survivors include his wife of 52 years, Sylvia Brotman of Falls Church, and one brother, Phineas Brotman of New York City.