PROBLEM TO BE SOLVED: To provide a work machine capable of performing filter regeneration with manual operation when an accumulation amount of PMs is not smaller than a first accumulation amount threshold value and smaller than a second accumulation amount threshold value.SOLUTION: A work machine includes a manual switch, a filter for trapping particulate matters included in exhaust gas from an engine, a first regeneration control part for, when an accumulation amount of the particulate matters trapped by the filter is not smaller than a first accumulation amount threshold value, performing automatic regeneration to automatically burn the particulate matters, a second regeneration control part for, when the accumulation amount is not smaller than a second accumulation amount threshold value greater than the first accumulation amount threshold value, performing manual regeneration to burn the particulate matters according to a command from the manual switch, and a third regeneration control part for, when the accumulation amount is not smaller than the first accumulation amount threshold value and smaller than the second accumulation amount threshold value, performing assistance regeneration to burn the particulate matters according to a command from the manual switch.SELECTED DRAWING: Figure 1【課題】ＰＭの堆積量が第１堆積量閾値以上で第２堆積量閾値未満である場合に手動操作によってフィルタ再生を行うことができる作業機を提供する。【解決手段】作業機は、手動スイッチと、原動機から排出された排出ガスに含まれる粒子状物質を捕集するフィルタと、フィルタで捕集した粒子状物質の堆積量が第１堆積量閾値以上である場合に自動的に粒子状物質を燃焼する自動再生を行う第１再生制御部と、堆積量が第１堆積量閾値より大きい第２堆積量閾値以上である場合に手動スイッチの指令によって粒子状物質を燃焼する手動再生を行う第２再生制御部と、堆積量が第１堆積量閾値以上第２堆積量閾値未満である場合に手動スイッチの指令によって粒子状物質を燃焼する補助再生を行う第３再生制御部と、を備える。【選択図】図１
