A coverall is convenient for a worker to act, and can be easily distinguished at night, with a convenience for a worker in doing a job. The coverall includes an upper clothes part, waist part and lower clothes part. The coverall has a shape wrapping an upper body of worker, and the upper and lower clothes parts are united through the waist part. The upper clothes part includes a wear fastener part, front-face protective cover, back fold part formed folded on the right and left both sides of the back surface, and a luminous band. The waist part has a waist band with elasticity. The lower clothes part is coupled to the upper clothes part in a united type with the waist part, and includes a lower clothes opening part openable along a hip part of worker on a rear face, a dual pocket, and a luminous band. The lower clothes opening part is formed in a ''U'' or ''n'' shape.