The program asks questions about prior-year employment and income to make sure you do not forget to report income you had in the past and may still have.
Why does this happen? When you transfer the information from your prior year return, the program automatically includes certain forms in the current year - to make sure you don't forget to update those forms. If a form is no longer required (e.g. W-2s, 1099s, K-1s, Schedule C), you have to delete them from the current year.
See: How do I delete forms in TurboTax Online? to remove unneeded forms and avoid review errors.