I was on workman’s comp all year but my employer gave me a w2 saying I made $20,000. What do I do with that?

[TomK2023]

Workers’ compensation benefits are not taxable and are not claimed on yearly tax statements. These are fully exempt from state and federal taxes, regardless if paid on a scheduled basis (like weekly or biweekly) or in a lump sum.

You should contact your employer to ask about this W2.