We claim the ornamental design for a work light, as shown and described.
FIG. 1 is a front perspective view of our work light;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front view thereof, the rear view being a mirror image thereof;
FIG. 4 is a left side view thereof, the right side being a mirror image thereof;
FIG. 5 is a top view thereof; and,
FIG. 6 is a bottom view thereof.
The dashed lines in the figures represent environmental structure and form no part of the claimed design. The long dash-short dash lines that abut a claimed surface represent an unclaimed boundary between claimed and unclaimed surfaces and form no part of the claimed design. All other surface(s) or portion(s) of our designs not shown in the figures or otherwise described in the specification form no part of the claimed design.