Cas obtained his B.Com from the University College, Durban in 1971. He completed the Housing Finance Course with the Wharton Real Estate Centre at the University of Pennsylvania. He also completed the Effective Directors Programme with the Kagiso School of Leadership. He served articles for training as a chartered accountant and ran an accounting practice for a number of years. He also spent time with the Kagiso Group managing a small venture capital company that invested in emerging manufacturing enterprises.
Cas became involved in anti-apartheid politics in the early 1980s. He was very active in the civic movement, starting in Laudium, Pretoria in 1980. He was the leading force in the establishment of the White Blocks Residents Association in Laudium during 1980. This was the first organized civic body in the country and mobilized low-income people around their day-to-day issues. Cas subsequently was instrumental in the formation of the Civic Association of Johannesburg, which was the trailblazer in negotiations around the restructuring of local government in the early 1990’s. He was also instrumental in the formation of the South African National Civic Organisation and was its Vice-President. Cas played a critical role in the United Democratic Front (UDF) and was leading its Johannesburg Area Committee. He also played a critical role in the defiance campaign during the mid 1980s.
Cas is currently the Managing Director at The Banking Association South Africa. He has played a central role in the negotiations leading to the signing of the Financial Sector Charter and is playing a critical role in the implementation of agreements reached in the Charter.
Cas is the immediate past chairman of The Johannesburg Civic Theatre and Vice-Chairperson of the Trust for Urban Housing Finance. He is also Chairperson of the National Business Initiative and 1st Deputy Chairman of the African Union for Housing Finance and also serves on the Board of the Centre for Development and Enterprise. He is also President of the International Union for Housing Finance and the President of the International Banking Federation (IBFed). He serves as a Council member of the University of Witwatersrand. He is also on the board of the Nepad Business Foundation and the Management Committee of Business Unity South Africa.
Cas was instrumental in the conceptualisation and establishment of Community Bank in South Africa and is passionate about the area of access to financial services to the broad spectrum of people in South Africa. He has considerable experience in housing finance, SMME support, local government restructuring, dynamics of organised business and the financial environment in the SADC region.