First of all, make sure all of your employees sign up for any programs for the airlines the fly on regularly. Aside from that, it doesn't appear you book enough flights on most airlines to get anything much of a bonus in terms of elite status or similar.

One thing, though, you can get as a bonus is from the carriers' business programs. I don't know about UA/Delta, but here's a link for American.

https://www.businessextraa.com/index.jsp

Signing up for that WILL consolidate all of your Business Extra points for your employees into your hands. I would expect the other carriers have something similar.