There may be a number of possibilities. Two that come to mind are using stationery, and using public forms. If you want to use the data received and do fancy automated things with it, by dumping the data directly into a database, then public forms would be the way to go, short of creating a javascript-enabled webpage that uses PHP or something on the server side. The other, easier solution is simply to create a stationery file on your network server drive, and have all your employees set their Outlook to point to it whenever they need it.
Create the stationery in Word, however you want the form to be. Save it on the network drive.
Then, in everybody's Outlook, go to Tools/Options/Mail Format/Send in this message format: HTML, and then click on Stationery Picker and navigate until you've selected your Word document as your stationery. Be sure to leave the default stationery as None. Then, whenever they want to use it, they need to 1) make sure their mail format is still HTML and 2) go to Actions/New mail message using/More Stationery and then choose the appropriate stationery.
That can also be automated with the help of VBA, where all they would have to do is click on a button to bring up the stationery. I would have to investigate as to how to do that. The Tek-Tips VBA forum may be better suited for that type of question.
-Christopher