Do you want to stay at home and use the computer in your office? In fact, some remote control software can help you achieve this. For example, LogMeIn or TightVNC can provide free versions. Through these tools, you can remotely see the full screen of your office computer, open or close applications, read emails, copy or paste text between computers, and access any file on the computer. Of course, you need to have enough reasons to convince your boss that how efficient you are when working at home.
If you do not need complete remote control but need to access files in the office computer or home computer, you can use Microsoft's free file synchronization tool - FolderShare. This way, your files will be constantly updated, no matter where you work or where you update them.