You will need to choose the languages and programming solution according to the web applications and the demands of the consumers. To create visual template web forms, you should use ASPX in the visual studio. You will have to route each incoming form templates and manage them for each page you are working on.
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.