To provide a working machine capable of reliably preventing the deposition of mud, sand and gravel or the like between a step and a side frame.

A hydraulic shovel 1 comprises a truck frame 10 having a side frame 15, a crawler 14 which is wound around a drive wheel 11 and an idling wheel 12, and mounted thereto in an endless manner by the engagement of an upper roller 13, and a get-in/get-off step 16 fitted to a side of the side frame 15. The step 16 is composed of a frame-like body with upper and lower parts being opened, and a cutout 20 is formed in a part of the side frame 15 opposite to the frame-like body.