The ornamental design for a leg for a workstation, as shown and described.
FIG. 1 is a front perspective view of a table leg embodying our design and being depicted as part of a workstation for environmental purposes, with a second identical table leg, the desktop and modesty panel of the workstation, the pedestal at the bottom of each table leg, the grooves extending longitudinally along each leg, and the generally trapezoidal shaped recesses at opposite ends of the table legs being shown in broken lines for illustrative purposes only and forming no part of the claimed design;
FIG. 2 is a rear perspective view of the table leg shown in FIG. 1, with the connection plate at the top the leg and the fasteners interconnecting the pedestal and post of the leg being shown in broken lines for illustrative purposes only and forming no part of the claimed design;
FIG. 3 is a front elevational view of the table leg shown in FIGS. 1 and 2;
FIG. 4 is a side elevational view of the table leg shown in FIGS. 1-3, with the opposite side elevational view being a mirror image thereof; and,
FIG. 5 is a rear elevational view of the table leg shown in FIGS. 1-4.