Dr. P. B. Roy Worked as Associate Prof Of Surgery at Mymensingh Medical College from June 1976 to June 1980. Then he joined Chittagong Medical College & Hospital as Associate Prof of Surgery & Prof of Surgery and worked from June 1980 to April 1985. Then he worked as Prof of Surgery at Shere Bangla Medical College from May 1985 to April 1987. And then he joined USTC & BBMH as Prof of Surgery from March 1992 to yet.