Overpayment letter from the unemployment office (update)

I received a letter saying I was overpaid about $1150 on my claim. I have read a lot of threads here and could not find my exact situation. I did not notice any errors at the time. Are payment plans possible?

If you are unsure, free legal aid in your area may help for this kind of notice.

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.