To provide an air-permeable working wear improved in air permeability while including a function of preventing infiltration of rain and snow, and intrusion of grit, dust and dirt.

This air-permeable working wear as an air-permeable working wear upper garment 1A obtained by sewing a waterproof fabric with waterproofness includes an armpit ventilation part 2 which allows circulation of open air through an armpit opening 21 by sewing the air-permeable fabric with air permeability on the lengthy armpit opening 21 formed along the sleeve bottom line of both sleeves 13 and an upper wear side line, and also a ventilation pocket part 3 which is obtained by sewing a pocket bag 32 obtained by sewing the air-permeable fabric in a bag-like shape on a front body opening 31 formed at least on either the chest part or the belly part of a front body 11, and covering the front body opening 31 with a downward or inclinedly downward flap 33.