There is a "minimum skill" listing which combination of skills a Bill requires, but I do not see where it actually shows which Work Priority task category it draws on (from the Work tab), and Bill tasks with no minimum skill requirement doesn't even show which skills benefit that task (I suggest all bills show which skills improve execution of that task).
+1 for both of these
(In fact, this might actually qualify for the "Your cheapest ideas" thread, since it's just showing some text, for info the game already has.)
Great suggestion!