PROBLEM TO BE SOLVED: To appropriately determine a state in which driving of a working part should be prohibited in a working machine.SOLUTION: A working machine 1 comprises a body 2, a working part provided in the body, a working motor 8 that drives the working part, inclination angle detection means 41 that detects an inclination angle of the body, and a control device 10 that drives and controls the working motor. The control device performs prohibition control that prohibits driving of the working motor when the inclination angle is equal to or larger than a predetermined inclination angle determination value and a change rate of the inclination angle is equal to or larger than a predetermined change rate determination value.SELECTED DRAWING: Figure 6【課題】 作業機において、作業部の駆動を禁止すべき状態を適切に判断する。【解決手段】 作業機1は、本体2と、前記本体に設けられた作業部と、前記作業部を回駆動する作業モータ8と、前記本体の傾斜角を検出する傾斜角検出手段41と、前記作業モータを駆動制御する制御装置10とを有し、前記制御装置は、前記傾斜角が所定の傾斜角判定値以上であり、かつ前記傾斜角の変化速度が所定の変化速度判定値以上になった場合に前記作業モータの駆動を禁止する禁止制御を行う。【選択図】 図6