The Workers Compensation Board of Ontario receives claims from injured workers for support. Some of the claims convert from short-term disability (STD) to long-term disability (LTD), which costa a lot more. So early detection of these cases helps reduce the costs. A research study was done to find out a way to classify the claims into high risk (of conversion) and low risk (of conversion). The factors identified were the average age of worker and the number of days for