Tom Kouzes, 61, a retired deputy assistant secretary of Labor and until recently executive director of the Northern Virginia Area Agency on Aging, died Monday at Northern Virginia Doctors Hospital after a long illness.

Mr. Kouzes served in various federal position for 34 years. He became deputy assistant secretary for administration and management in the Labor Department in 1968, and served there until his retirement in 1974.

He lectured at George Washington University from 1955 to 1970 on public administration. He also had lectured at the University of Michigan and for the University of Southern California and Golden Gate University extension programs and the American Management Association.

He was a member of the Federal Government Accountants Association, American Society for Public Administration, American Political Science Honor Society and the United Nations Associations.

Mr. Kouzes was also an active member of the Mount Vernon Place United Methodist Church and shared his home as a sponsoring parent with young people visiting from Finland, Costa Rica, Kuwait, Colombia, Thailand, Venezuela and Iran.

He is survived by his wife. Thelma Loss Kouzes, of the home in Fairfax; two sons, James Michael, of San Jose, Calif., and Richard Thomas, of Princeton, N.J.; nine brothers and sisters, Nicholas, of Oregon, Helen Paviakos, of New Jersey, George, James and Gust, of Illinois, Pete, of Wisconsin, Mary Clowers, of Nevada, Christine Anderson, of Arizona, and Katherine Langford, of California.

The family suggests that expressions of sympathy be in the form of contributions to the American Cancer Society or Mount Vernon Place United Methodist Church.