Beginning May 7, 2013, business owners will be required to use a new form I-9, the form that confirms the eligibility of your employees to actually be your employees.
The form was first created to combat employment of illegal aliens and collects information about the immigration and citizenship status of each employee. The new form, which is available here, can be put in to use immediately. It is reformatted, has better written instructions (which is a relief to many), and clarifies what constitutes adequate documentation.
Employers would be well-advised to become familiar with the new form in advance and may find it easier to use than its predecessor.