Similar boat here, and there is a simple reporting chart with this data, but no easy way to export the data from the chart, which is a huge failure IMO. Is there a way to export data from a "Reporting" dashboard chart?
I need a simple way to create a list (.csv would be ideal) of overdue tasks by employee, across ALL projects. You’d think this should be pretty easy, but it appears that it is not. 
@Colleen14 the closest thing I have found is this request here, which if implemented, might allow to search for “overdue tasks” token instead of specific dates. Allow date tokens in advanced search fields, reporting/dashboards, and rules