This paper is an attempt to measure the annual income assistance to olive oil producers in Greece for the period 1988 - 1998. The well-known PSE/CSE method was used in the percentage form. Also, an evaluation of the effectiveness of the olive oil support policy was made. The main conclusions are that 1) The level of producer's income support is significant, 2) the policy for olive oil is efficient and meets its aims, 3) this policy is very costly for the taxpayers. With reference to policy implications, a change in the system of support to that of a new one in which the effectiveness in delivering additional income to producers is higher.