I want to report my former boos for tax evasion/fraud as I did all of his books,

file IRS Form 3949 A to report my former bossfor tax evasion/fraud. I did all of his bookkeeping, billing, banking, etc. He had me make large bank deposits with Comcheks from thousands of dollars he had in his Comdata account. He had over %500,000 in accounts receivavlees last year and the year before that. He does not provide 1099's to any of his employees, including me. To my knowledge he has not file a tax return for the past two years as he told me that once. If he has file, he never once asked me to printout a reportof his gross or net income to assist in filing his taxes. The problem with reporting him is that he was paying me "under the table" so I would not lose my disability benefits. I don't think I would have lost said benefits as I did not work that many hours p[er week. What should I di? I don't want to get myself in big trouble but he cheats and steals from his own colleagues and employees and underpaid me by a lot. He also breaks other major federal laws as he does not have good safety practices in the trucking industries. As a resul;t he is literally putting lives at stake all the time.