The next step you should work on is adding the elements. Now its possible to add images, captchas or even videos in a form. So your web form templates are free to be designed. You can do whatever you like with them. You must follow some professional looking web form templates to create a good one. Most surprisingly, creating these templates don't take a lot of time. Just a few clicks and you can get an instant template from word.
The social security number will be part of the template. It will provide the company everything it has to know about the employee. If he has an outstanding warrant of arrest from the police, if he is an outstanding debt, what responsibility he has, what violations he did, etc.