An Operative was found to be sitting on the edge of the mid-rail of the MEWP basket in an unsafe manner along the North side of CP-1 area. Though the operative admitted  he  was tired of standing for a longer period without break while questioning to ascertain his level of operator competency, which is an indication that there was no periodic rest and job rotation  system implemented for such a tedious task. This act has a potential to cause a serious accident such as fall from height.  In addition, he could not provide his ADAC approved gate pass upon request.   ACTION: CMA advised TCA-JV to take corrective action  to address this concern and ensure such does not reoccur.
Hazard category: At-Risk Behavior