Minion Pro Family
If circumstances require a serif for long form copy like an annual report or more formal communications like an invitation, you may consider using the complementary typeface, Minion Pro. This typeface was inspired by classical typefaces for an elegant and functional design. It should be used secondarily to Univers and not in headlines.
Body copy can be set at 9 to 14 point, but 9 point is standard for long form copy.