How can I save open office document as Microsoft files?

I happen to like using Open Office Suite for personal use. The advantages it has include the fact that it is free and bears a counterpart for every Microsoft application. Although the Open Office Suite lacks Outlook, the Mozilla Thunderbird is sufficient for me.
I however have found out that the Microsoft office that we use at my office cannot open the files I create at home using the Open Office Suite. This is a big setback because I happen to have a lot of presentations and reports. Is there a way of saving open office document as Microsoft files?
