This paper is a study designed to understand how intrinsic rewards, as compared with extrinsic rewards, are perceived as sources of motivation by staff of NFP organisations.Data was gathered through a survey featuring a number of statements about intrinsic and extrinsic rewards. The small-sample t-test was used to determine the significance of responses, and hence test the hypothesis that employees are motivated by intrinsic rewards.The findings of the study are that significant t-test p-values highlighted intrinsic rewards -in particular, the achievements of employees' clients, work/life balance, and having fun at work -as being important staff motivators.