Because employee code was technically the property of Rackspace, we had a policy that they needed to ask for permission before releasing it to the public under an open source license. But when we looked at our actual history, we saw that we were granting 100% of the requests.
This new policy grants pre-approval to all Rackers to contribute to open source projects under their own name, holding their own copyright. We even allow contributions that occur on Rackspace time using Rackspace resources, as long as their manager agrees that it is a good use of their at-work time.
VanL (I wrote the policy)