Robert F. Lucey, a senior managing director and chief of operations of Putnam Investments, will retire at the end of this year. Mr. Lucey joined Putnam in 1985 as executive vice president and was named president of the operations unit in 1986. Since 1994, Mr. Lucey has overseen corporate accounting, general services, legal services, compliance and trustee relations. Putnams defined contribution group leader, Karnig Durgarian, now chief of the defined contribution business, will become senior managing director and chief of operations. Thomas M. Turpin, chief administrative officer for Putnams mutual funds and institutional businesses, will become chief of the defined contribution unit.