I recently wrapped filming on a corporate piece in which the client was set on using a dynamic background, by which I mean they wanted to interview people in a space that was easily recognizable as unique to the company, and they wanted to do it while there was activity in the background. It began a conversation about the pro's and con's of using dynamic and static backgrounds, some of which you might find helpful.
First off, the dynamic background provides instant branding for your corporate video. If you run a bank, for instance, filming in your bank lobby can let your viewer immediately know what you're all about. They see your space, your logo, other customers milling about and doing business. It says, "Here's our office. It looks nice, and it's busy. Come check it out."
However, what you're saying on-camera needs to match that visual message. Watch a news story on TV... are you watching the reporter, or do you find yourself checking out what's going on behind him/her? Chances are, you're checking out the scene, not just the talking head. If there's a mis-match between your script and the background, the visual is going to win out, and your message can easily get lost in all the dynamic excitement happening behind you.
A static background, on the other hand, focuses all of the attention on the speaker and his or her message. You lose the built-in branding and may need to augment your story with imagery and/or b-roll (which you'd probably do anyway), but there is nothing to distract the viewer from the message you're delivering.
They key to make a static background work, however, is a dynamic speaker. When choosing a static background, work with your speaker to encourage the best possible performance. The more energy he/she brings, the more they will stand out and hold the audience's attention.