Wijeratne began his career as a planter having apprenticed under Carlyle De Kretser on Kehelwatte Estate Plantation in Lunugala in the Badulla district and then joined Whitalls Plantation on 11 October 1950. Wijeratne had the rare opportunity to also understudy De Kretser on their rubber property Bibile Group which they had just acquired from the Dunlop rubber Company.Carlyle’s father Harris was instrumental in securing his first appointment at Whittalls. He went onto hold senior positions in the tea plantation sector including being appointed General Manager of Demodara Group in 1968, the largest tea plantation in Ceylon. He served as a Director of Whittals Estates and Agencies, Gordon Frazer and Co, Ltd., Bosanquet and Skrine. He was the Chairman of Planters Society from 1967 to 1968 and the Chairman of Planters Association of Ceylon from 1970 to 1971. He was also Chairman of the Agency section of the Planters Association, Chairman of the Colombo Tea Traders’ Association, Vice President of the Ceylon Institute of Planting, Member of the Ceylon Tea Propaganda Board, and Member of the Tea Research Institute of Ceylon.[3][4]
Government sector
In 1977, on invitation of President J. R. Jayewardene, he switched to the government sector by becoming Director Operations of the Lake House Group of Newspapers. Thereafter in 1978 he was appointed Permanent Secretary to the Ministry of Agricultural Development and Research and Chairman of the Agricultural Development Authority, Sri Lanka State Plantations Corporation, Land Reform Commission, Pelwatta Sugar Company and Rajarata Food Grain Processing Co.[3]
Wijeratne resigned from all government posts and his commission when he went into active politics in 1988 when he was appointed Chairman of the United National Party. He later went on to become the General Secretary of the Party. Wijeratne led the party in 1988 Presidential elections followed by the 1989 General Elections. Wijeratne was appointed a National List member of parliament in 1989 and was appointed as Minister of Foreign Affairs and State Minister of Defence by PresidentRanasinghe Premadasa. Wijeratne invariably made many enemies due to his tough position.[5] He was equally hawkish in dealing with Liberation Tigers of Tamil Eelam (LTTE) and Janatha Vimukthi Peramuna (JVP) militants.[6] Having established Operation Combine, he masterminded the JVP near rout in 1989[6] and the LTTE was to follow.[7]
Wijeratne was killed on 2 March 1991, by the LTTE organisation[8] using a remote controlled car bomb[9] while he was travelling to his office in Colombo on Havelock Road, during rush hour killing 19 people including the minister and five bodyguards and 13 civilian bystanders.[1][10] Ironically, two days before his assassination Wijeratne laughed off the LTTE threats to his life saying "Good Luck to them".[6] He was known to have a hard line stance towards the LTTE.[11]