Since i started this job, I had work 80+ hours every 2 weeks for a year. But when i recieved my W2, It shows that less than half of the hours were reported. What do I do?

You need to contact your employer to get a corrected W-2.  No one else can assist with this issue other than a lawyer.

Thank you for taking the time to answer my question. I have requested any and all documents showing where and why these hours went. And I was informed that the hours were removed or deducted from my timesheets to cover rent and a store tab. Which is fine, but why not just deduct the amount owed after it gets reported, taxed, and reflects on my payroll check. That way I at least get the credit for working the hours as far as being a full time employee that works long hours. Why completely remove the hours from my work log like I never even worked it at all? If you don't mind me asking. If not then I'll will consult a labor law attorney and again thank you for clarifying what I had suspected.