He is the co-founder of Genting Hong Kong Limited, formerly known as Star Cruises Limited.
Lim is the chairman and board executive of Genting Malaysia Berhad & Genting Berhad, also known as Genting Group, a conglomerate active in leisure & hospitality, power generation, oil palm plantations, property development, biotechnology, and oil & gas business activities. He is the chairman of Genting Group, a casinos, resorts and palm oil conglomerate with a market capitalization of almost MYR40 billion, and the second son of fellow billionaire Lim Goh Tong, the company's founder. Tan Sri Lim Kok Thay ( simplified Chinese: 林国泰 traditional Chinese: 林國泰 Pe̍h-ōe-jī: Lîm Kok-Thài born 16 August 1951) is a Malaysian Chinese billionaire businessman.