PROBLEM TO BE SOLVED: To make vibrational motion and deformation of a hand rail less likely to occur in a work machine in which the hand rail is supported in a deck protruding to the lateral side of an operation part.SOLUTION: A working machine includes a deck 42 which is supported by an operation part frame through an operation part 4 in a manner such that the deck 42 protrudes to the lateral side of the operation part 4. The working machine includes a hand rail 50 which is connected with the operation part 4 and the deck 42 to be supported.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2016,JPO&INPIT【課題】運転部の横側方に張り出たデッキに手摺りを支持する作業機において、手摺りの振れ動きや変形を発生し難くする。【解決手段】運転部4の横側方に張り出す状態で、運転部4を介して運転部フレームに支持されたデッキ42を備えている。運転部4とデッキ42とに連結されて支持された手摺り50を備えている。【選択図】図5