FIG. 1 is a front perspective view of a cabin for working vehicles showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof, the rear view being a mirror image of FIG. 3;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a referential view showing the article in use.

The broken line showing of a working vehicle in FIG. 8 is included for the purpose of illustrating environmental structure and forms no part of the claimed design.