If you spend any time browsing through the titles of Tim Keller's sermons, you'd think that he rarely talks about faith in the workplace. However, spend some time listening to his sermons (on the Gospel in Life podcast among other sources) and you'll find that he talks about faith and work quite a bit. His sermon, "A World of Idols" is a great example of this.
I have listened to Tim Keller thousands of times. Literally. Tim started accompanying me on runs 20 years ago. He always kept up, and never seemed to break a sweat. I’m not sure Tim made me a faster runner (in fact, I’m sure the opposite….he can’t hold a candle to a good house music track IMO for running negative splits), but I’m sure he has made me a better follower of Christ and since my competitive running days are long gone, I’ll take that trade every day.