1099-NEC -- NOT Business Owner

My husband and I are filing 2020 taxes jointly and he had one 1099-NEC form that he received from his employer. I understand it is considered self-employed, however even with the employer name and TIN #, it is moving forward as though we owned the business, and is asking for forms reflecting that. Is this affecting the amount owed? How do I make sure it is reporting as income from the business he worked for?