The present study was concerned with the relationships between boredom at work, personal characteristics and performance. Data on individual characteristics, work effectiveness and experienced boredom at work was collected from a sample of 93 heavy truck drivers by means of questionnaires and personnel file records.The results suggest that boredom while driving through a monotonous desert road was moderately, yet systematically, associated negatively with higher mental and physical individual capacity. Boredom was also negatively associated with effectiveness. The relationship between boredom and work effectiveness was significantly moderated by personal characteristics. It was found that boredom was more strongly related to work effectiveness at the lower levels of individual capacity. The results are discussed in terms of possible implications for personnel selection and placement decisions.