If he files a 1099 for you, he's legally obligated to send you a copy. If it shows the wrong amount, you ask him to issue a corrected form.
If you are reclassified as an employee after you file, and that necessitates changes in your return, amend your tax return accordingly.Quoting hdot
If you want the IRS to investigate whether you were an employee under federal law, you should file the requisite forms to trigger the investigation.Quoting hdot

