Corruption remains the most significant barrier to doing business in Kenya, a joint World Bank and Kippra survey says. The survey shows that graft is the number one barrier to investment. The Investment Climate Assessment Survey is entitled: Enhancing the Competitiveness of Kenya's Manufacturing sector: The Role of the Investment Climate. It says that corruption was rated as a severe hurdle by three quarters of the sampled firms, while respondents reported that 'unofficial payments' to 'get things done' are required 57 per cent of the time.