THE HAGUE -- Willem Drees, 101, the nation's longest-serving premier and the architect of its comprehensive postwar welfare system, died May 14 at his home here. The cause of death was not reported.

During his years as premier, from 1948 to 1958, the Labor leader supervised the nation's reemergence into prosperity from the harsh five-year German occupation during World War II.

In 1949, he introduced a state pension for all Dutch citizens over 65, the basis of today's welfare system. Despite some trimming by the fiscal austerity administration of the current premier, Ruud Lubbers, the welfare system still provides cradle-to-grave care for Dutch citizens.

Although Mr. Drees is primarily known as the father of the Dutch welfare state, he coped with the Netherlands' major foreign policy issues as well. It was his government that waged two colonial wars in the late 1940s in an attempt to hold onto the old Dutch East Indies.

But it was Mr. Drees himself who decided that maintaining a colonial empire was a lost cause and ultimately handed over sovereignty of almost all of the colony to the new Republic of Indonesia in 1949.

During his first term as prime minister, the Netherlands abandoned its longstanding commitment to neutrality and joined NATO as a founder member in 1949. His fourth and last government signed the Netherlands into the newly born European Community.

Mr. Drees was born into a poor Amsterdam family. He began his political career as a stenographer in the Dutch parliament. He won a seat in The Hague City Council in 1919 and went to parliament in 1933 for the Social Democrats.

Because of his political prominence, he was imprisoned in World War II in Buchenwald concentration camp, but was released after a time because of a severe stomach ailment. He became active in the Dutch resistance.

He quit politics in 1958 after a surprise election defeat for his "Red-Catholic" alliance with the Catholic People's Party. Blind and almost deaf, he spent the final years of his life in his modest home in The Hague.

Mr. Drees returned to the public arena in 1971 when he pulled out of the Labor Party, claiming its left wing had betrayed Labor's Social Democratic foundations. The issue of whether to deploy NATO cruise missiles on Dutch soil marked his final public clash with his successors in the Labor Party. He sharply criticized the Labor leadership of the day for its unconditional opposition to deployment.

Lubbers' government decided in favor of deployment in 1985. Under last December's U.S.-Soviet agreement to withdraw all medium-range nuclear missiles from Europe, deployment of the 48 missiles on Dutch soil was called off.

RICHARD R. LeCLAIR

Education Department Official

Richard R. LeClair, 58, the acting director of the Department of Education's National Institute of Disabilities and Rehabilitation Research, died of cancer May 15 at Montgomery General Hospital. He lived in Silver Spring.

Mr. LeClair was born in Augusta, Maine. He graduated from the University of Maine and received a master's degree in administration from Wayne State University in Michigan. He attended the Army's Command and General Staff College and the Industrial College of the Armed Forces.

He served in the Army during the Korean War and retired from the Army reserves as a colonel about 1985. He became the executive director of the Delaware Easter Seal Society in the late 1950s.

Mr. LeClair moved to the Washington area in 1966 and joined the Department of Health, Education and Welfare, where he held several high-level positions, including director of planning and evaluation of the Education Department's National Institute of Disabilities and Rehabilitation Research.

He was named the acting director of National Institute in 1979 after the Department of Education was made a separate agency, and he remained in that position until his death.

Mr. LeClair had received two Distinguished Service Awards from HEW and a letter of commendation from the House Committee on Science and Technology.

Survivors include his wife, Lois LeClair of Silver Spring; three children, Suzanne Spruill of Atlanta, Denise LeClair of Durham, N.C., and Army lst Lt. Marc LeClair of Fort Carson, Colo., and one brother, Raymond LeClair of Augusta.

THOMAS WILLIAM MURPHY JR.

D.C. Psychiatrist

Thomas William Murphy Jr., 74, a Washington psychiatrist, died of pneumonia May 16 at Georgetown University Hospital.

Dr. Murphy, who lived in Washington, was born in Newark, N.J. He graduated from Georgetown University and Georgetown medical school. During World War II he was a medical officer aboard a destroyer in the Pacific, and he was discharged as a lieutenant commander.

He opened a private practice in psychiatry here after the war, and continued to practice until his death.

Dr. Murphy was a member of the Georgetown Clinical Society, the D.C. Medical Society and the Mental Health Commission of the federal courts in Washington.

His wife, Rosemarie Ward Murphy, died in 1984.

Survivors include three daughters, Mel Gallagher of Houston and Martha G. Kavanaugh and Michele Durbin, both of Bethesda; two sons, Thomas W. Murphy III of Brookeville and Mark John Murphy of Washington, and seven grandchildren.

RUTH QUINN DAGGETT

Government Secretary

Ruth Quinn Daggett, 93, a government secretary for more than 30 years before retiring from the Defense Department's office of the Joint Chiefs of Staff in 1955, died of cancer May 12 at her home in Cooksville, Md.

Mrs. Daggett was born in Camden, N.J., and moved here in 1918. She attended Strayer Business College. She began her government career with the old War Department, where her bosses included an Army major named Dwight David Eisenhower, later a five-star general and president.

Her husband, Clarence Stevens Daggett, died in 1951. A daughter, Jean Adelle Daggett Seymour, died in 1961. Her survivors include three grandchildren.

ANNA MARIA MITCHELL

Passport Examiner

Anna Maria Mitchell, 62, a passport examiner with the State Department, died of cancer May 18 at Sibley Memorial Hospital. She lived in Bethesda.

Mrs. Mitchell was born in Udine, Italy. She moved to the United States in 1946. She lived for a year in Georgia and attended the University of Georgia. She moved to the Washington area in 1947. She joined the State Department in 1971 and worked there until her death.

She was a member of the Little Flower Catholic Church in Bethesda.

Survivors include her husband, Thomas Mitchell of Bethesda; one son, Peter A. Mitchell of Rockville, and one brother, Gian L. Tavano of Udine.

CARL P. HEISIG

Agricultural Economist

Carl P. Heisig, 80, an agricultural economist who retired as deputy administrator of the Agriculture Department's Economics Research Service, died of cancer May 17 at his home at Kilmarnock, Va.

Mr. Heisig was born in Evansville, Ind., and graduated from Washington State University. He received a master's degree in agricultural economics at the University of Wisconsin.

He moved to the Washington area in 1944 after working for six years in Berkeley, Calif., for the Department of Agriculture's bureau of agricultural economics, and he continued to serve in that agency and its successor agencies until retiring in 1970.

He studied agricultural problems in Brazil, the Soviet Union and Mexico, and he wrote several articles for technical publications. He was a former vice president of the American Agricultural Economics Association.

A former resident of Arlington, Mr. Heisig moved to Kilmarnock after retiring.

Survivors include his wife, Ellen U. Heisig of Kilmarnock; two daughters, Ann Haines of McLean and Carell Riggs of Shawnee, Okla.; one son, Lawrence Heisig of Annapolis, and seven grandchildren.

JOE H. GASKIN

Washington Area Physician

Dr. Joe H. Gaskin, 51, a Washington area physician who had been chairman of the endocrinology department at the Washington Hospital Center since 1975, died of cancer May 16 at the Washington Hospital Center.

Dr. Gaskin, who lived in Bethesda, was born in Albemarle, N.C. He graduated from Davidson College in North Carolina and received a degree in medicine from the University of Pennsylvania. He served in the Air Force from 1961 to 1963.

After completing his medical training, he moved to the Washington area in 1975 and joined the medical staff at the Washington Hospital Center.

Dr. Gaskin was a member of Pilgrim Lutheran Church in Bethesda and had served on the board of Lutheran Social Services.

Survivors include his wife, Virginia Gaskin of Bethesda; two daughters, Sarah Price of Richmond and Mary Gaskin of Boston; one son, John Gaskin of Bethesda; one brother, Dr. John S. Gaskin Jr. of Albemarle, and two sisters, Lillian Gale of Charleston, S.C., and Dorothy Sloan of High Point, N.C.