Ssi Maryland What Is The Amount You Are Exempt From Paying Back While Working And Collecting Ssi?

What is the amount you are exempt from paying back while working and collecting ssi? - ssi maryland

my son is disabled with muscular dystrophy and income from Social Security Disability (SSDI) and SSI. He has just a job that you make about $ 200 per month. I understand that it is not a sum of money must be paid to the request a month before compensation of $ 50 for SSI. I understand that with SSDI SSI. We live in Maryland, if it makes a difference. Can anyone help me with this?