An operator cab for work vehicles, comprising: an operator cab body that forms a doorway and a ventilation port; a door that is configured to open and close the doorway; a lid portion that is configured to open and close the ventilation port; a link mechanism that connects the door and the lid portion to each other so that the lid portion is opened when the door is opened and the lid portion is closed when the door is closed; and a closing timing adjustment unit that stops a closing motion of the lid portion in a first stage of a motion of closing the door and that performs the closing motion of the lid portion in a second stage of the motion of closing the door after the first stage, wherein the link mechanism includes a door-side link swingably connected to the door so as to be centered on a first end portion of the door-side link, and a lid-side link swingably connected to the lid portion so as to be centered on a first end portion of the lid-side link, a second end portion of which being swingably connected to a second end portion of the door-side link, and the closing timing adjustment unit includes a slot hole formed in the second end portion of the door-side link so as to extend in a longitudinal direction of the door-side link, and a slot projection formed in the second end portion of the lid-side link, inserted into the slot hole, being movable in a longitudinal direction of the slot hole in the first stage, and reaching an end in the longitudinal direction of the slot hole in the second stage, characterized in that the closing timing adjustment unit further includes a first projection portion fixed to the operator cab body, and a second projection portion provided in the lid-side link and pressed against the first projection portion toward the lid portion side to restrict a movement of the lid-side link, and, when the slot projection reaches the end in the longitudinal direction of the slot hole, pressing of the second projection portion against the first projection portion is released. an operator cab body that forms a doorway and a ventilation port; a door that is configured to open and close the doorway; a lid portion that is configured to open and close the ventilation port; a link mechanism that connects the door and the lid portion to each other so that the lid portion is opened when the door is opened and the lid portion is closed when the door is closed; and a closing timing adjustment unit that stops a closing motion of the lid portion in a first stage of a motion of closing the door and that performs the closing motion of the lid portion in a second stage of the motion of closing the door after the first stage, wherein the link mechanism includes a door-side link swingably connected to the door so as to be centered on a first end portion of the door-side link, and a lid-side link swingably connected to the lid portion so as to be centered on a first end portion of the lid-side link, a second end portion of which being swingably connected to a second end portion of the door-side link, and a door-side link swingably connected to the door so as to be centered on a first end portion of the door-side link, and a lid-side link swingably connected to the lid portion so as to be centered on a first end portion of the lid-side link, a second end portion of which being swingably connected to a second end portion of the door-side link, and the closing timing adjustment unit includes a slot hole formed in the second end portion of the door-side link so as to extend in a longitudinal direction of the door-side link, and a slot projection formed in the second end portion of the lid-side link, inserted into the slot hole, being movable in a longitudinal direction of the slot hole in the first stage, and reaching an end in the longitudinal direction of the slot hole in the second stage, a slot hole formed in the second end portion of the door-side link so as to extend in a longitudinal direction of the door-side link, and a slot projection formed in the second end portion of the lid-side link, inserted into the slot hole, being movable in a longitudinal direction of the slot hole in the first stage, and reaching an end in the longitudinal direction of the slot hole in the second stage, characterized in that the closing timing adjustment unit further includes a first projection portion fixed to the operator cab body, and a second projection portion provided in the lid-side link and pressed against the first projection portion toward the lid portion side to restrict a movement of the lid-side link, and, a first projection portion fixed to the operator cab body, and a second projection portion provided in the lid-side link and pressed against the first projection portion toward the lid portion side to restrict a movement of the lid-side link, and, when the slot projection reaches the end in the longitudinal direction of the slot hole, pressing of the second projection portion against the first projection portion is released.