A supporting structure for an operator cab on a body frame of a work
machine having a floor frame with a low floor portion and a high floor
portion. A vibro-isolating support provided between the low and high floor
portions so as to support the operator cab resiliently. At least one of
said vibro-isolating supports located at either of the low floor portion
having a support axis (M--M) or the high floor portion a having support
axis (N--N) inclines longitudinally at a predetermined angle (.theta.)
from a vertical axis toward the center of gravity (G) of the operator cab.
Either one of the vibro-isolating supports is located at the low floor
portion and the high floor portion having a vertical support axis.
