My employer never had me fill out an I-9 form. Does one need to be filled out to file my taxes properly?

[plys]

I obtained a second job earlier this year to earn some extra income. I was terminated from this company about a month later. Just today I realized that while I did present them with documentation that showed that I could work legally in the U.S, I never did officially fill out an I9 form. If my research is correct, this form is required by law to be obtained and kept on file by a business for up to one year after termination of an employee. I also either had to sign it manually or go online and sign it electronically, neither of which ever happened. Does an I-9 form have to filled in order for me to file my taxes properly?

[vaiveatoish]

No. That's their problem. You just file the tax return like normal.