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 front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The dashed lines in the figures represent environmental structure 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.