Why is TurboTax indicating a "Canada Employment Amount" for my husband when he has had no employment (no T4 employment)? How do I correct that entry of $21.43?

Does he have any other employment income?

No other employment income — hence the question.

Does he have a T4A or a T4PS? If not, please go through his return to make sure none were entered. If you have please contact our phone support team for assistance as they can view your return. 

Thank you for choosing TurboTax.

No T4A except for OAS and P, which are dealt with on a different line. I gave up and submitted the form as was.