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.
First and foremost thing is learning about your equipments and available resources. You will need to make sure that you have someone whom you can use for optimizing the web form. You must prefer a common programming language while creating online form templates. You should consider all the available options first and then pick up the best one among them. You should always remember, the best are also the commonest ones as well. So use those software or programming language that are common or there are experts around you who can help.