 Hoole worked as a lecturer in the Department of Mathematics at the National University of Singapore.Hoole was amongst three hundred academics who, in 1988, formed the University Teachers for Human Rights (Jaffna) to document and report the increasing number of human rights violations in Sri Lanka's civil war.Following the assassination of Rajini Thiranagama, one of the founders of UTHR(J), in 1989, many members of UTHR(J) left the organisation.