This study investigated the relationship between Type A behavior and job performance using three measures of Type A behavior (Milwaukee Scale, A-B Scale, and Type A Measure) and 14 job performance subscales obtained from each participant's record. A total of 103 Kuwaiti employees, 66 men and 37 women, participated voluntarily. Some job performance scales as well as the over-all performance scores were not significantly related to any of the measures of Type A behavior used. These scales were Initiative, Dealing with Others, General Appearance, Accuracy, Speed, Adherence to Rules, Relationship with Colleagues, Adherence to Attendance Time, and Over-all Performance. Following Supervisors' Orders is the only scale for which scores correlated .25, and .26, respectively ( p = .05) with two of the Type A measures. Inconsistency with previous findings may be attributed to treating Type A behavior as a global construct rather than separating out its components and to job-related factors that might moderate the possible relationship as well as the variations in the tests' reliabilities and lengths.