PROBLEM TO BE SOLVED: To provide a work machine which can early notice looseness of a screw fixing a handle to prevent the handle from coming off a housing.SOLUTION: A work machine 10 includes: a handle which is detachably fixed to a housing 11 for housing a motor 20 a recess part 15 which is provided to the housing 11 a projection part 31 which is provided to the handle 30 and is fitted to the recess part 15 a male screw component 34 which is inserted to the recess part 15 and the projection part 31 and fixes the handle 30 to the housing 11 and a female screw component 17 for fixing the handle 30 to the housing 11. In a state where the male screw component 34 is coupled to the female screw component 17 to fix the handle 30 to the housing 11, the length of a tip side of the male screw component 34 including the coupling portion to the female screw component 17 is longer than the projection length of the projection part 31, and a corner part between a tip end face and a side face of the projection part 31 in a projecting direction is chamfered.COPYRIGHT: (C)2014,JPO&INPIT【課題】ハンドルがハウジングから外れるのを防ぐために、ハンドルを固定するねじの弛みに早期に気付くことができる作業機を提供する。【解決手段】作業機10は、原動機20を収容したハウジング11に着脱可能に固定したハンドルと、ハウジング11に設けた凹部15と、ハンドル30に設けて凹部15に嵌合する突部31と、凹部15と突部31とに挿通してハンドル30をハウジング11に固定するための雄ねじ部品34と雌ねじ部品17とを備え、雄ねじ部品25を雌ねじ部品17に締結させてハンドル30をハウジング11に固定した状態で、雄ねじ部品34の雌ねじ部品17との締結部分を含む先端側の長さを突部31の突出長より長くし、突部31の突出方向の先端面と側面との間の角部を面取りした。【選択図】図4