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.
The employer needs to know the complete address of the employee for a number of reasons. One is for payroll purposes. Setting up an account for a person requires him to provide his address. Another reason is that if something wrong happens, they would know where to locate him or his family. The company also needs an employee's address so that they can be certain of his identity. And another reason would be for mailing of anything necessary purposes.