Work and play don't usually get along very well. Especially when it comes to shoes. Dress shoes are often required in the workplace. But instead of heels, I see women wearing flats, wedges, and flip flops. Although there a time and a place where each of these types of shoes is acceptable, they do not belong inside a business meeting, proposal, or presentation. Classic heels are a great choice and in my opinion, should be standard. One of my favorite (affordable) designs for the fall is Jessica Simpson's Acadia. It comes in seven different colors and uses a peep toe, cutouts, and a hidden platform to modernize a classic pump style. You can wear them to work, then out to play afterwards.
Check out more of her well designed collection at http://www.jessicasimpsoncollection.com/