I am hiring independant contractors, what forms do I need to provide before hiring? please read details?

Hi,

I am aware at the end of the year I need to provide both contractor and IRS a copy of the 1099 reportings for the year.

I am just curious on signing on a contractor is there any forms I need to give them to fill out prior to contracting, I know someone who gave a independant contractor a Form I-9.....

I have also heard of W-4 and W-9....

Can you help me please, I have also heard you dont have to give anything just sign a contact with the contractor with dates to and from. Then file 1099 at the end of the year
www.uscis.gov/portal/site/uscis/men...

Okay so I this link that states independant contractors are not required to sign a form I-9. See I am trying to help myself, is there any form an independant contractor needs to sign on contracting with?
A hunch of course I know the contract will have more than a start and end date. :-)

So a W-9 and a 1099 at the end of the year correct? Or do they have to sign a 1099 every pay?

Also all I have to do is pay them and keep track of their invoice correct?
Hunch

I am sure gone over it for 3 days with IRS to confirm, they are independant contractors. They chose their hours, and provide services I just pay them for their services

ideally you would want a contract - a contract should include WAY more than start date and end date.
a contractor needs to complete a W9 prior to receiving their first check
You provide the contractor a 1099, if they meet the requirements in Jan
you provide a 1099 and 1096 to IRS by the end of Feb

Are you sure that these individuals meet the requirements of an independent contractor?