Gantt Charts as Management Reports: A caution
Remember our earlier note that the amount of work may or may not be scheduled evenly across the length of the bar? Shading the bar to represent percent complete (the most common method of status representation on a Gantt Chart), may not be completely accurate. The only time the Gantt chart is truly accurate is when the work is distributed evenly across the bar. However (and this is an important behavioral issue), status reporting on the Gantt chart helps establish a sense of urgency, which is a prerequisite for team performance.

Shaded bars are used for qualitative reporting of schedule status in management reports, but beware of tasks where work is not uniformly distributed.