George J. Blaetus, 69, a retired legislative authority in social welfare programs with the Department of Health, Education and Welfare, died of a pulmonary ailment May 6 in San Diego, Calif.

A resident of Arlington and earlier of Washington for many years, he had been taken to San Diego in April for treatment of his illness. He had retired for HEW in 1973.

Born in Pennsylvania, Mr. Blaetus grew up in Omaha, Nob. He was a graduate of Creighton University, where he also received a law degree. He held a master's degree from the Schools of Social Services of the University of Nebraska.

Mr. Blaetus first worked on state welfare programs in Nebraska, then joined the federal Social Security Administration's regional office in Minnesta in 1937.

He came to the Washington Social Security offices in the mid-1940s and continued with them when they became part of HEW at its formation in 1953. He received numerous awards for outstanding service, including HEW's Superior Service Award.

An active member of many professional organizations, Mr. Blaetus lectured extensively on social welfare legislation.

He is survived by two sisters, Mary Blaetus Vacher and Frances Blaetus Resley, both of the San Diego area.