Another person who is asking the same question again.
You won't necessarily be cut off but if you earn more than $85 a month your SSI benefit will be reduced. Example: You earn $500-$85=$415. Half of that amount reduces your SSI. Half of $415=$207.50. The SSI benefit will be reduced by $207. Even though it reduces your SSI benefit you are still financially ahead.
If your benefit amount is usually $733 then you would have to earn $1551 a month before you are cut off. If your benefit amount is usually $480 then you would have to earn $1045 a month before being cut off.
Volunteer work won't reduce your SSI benefit but when they do a medical review (your award letter which tells you what your reporting responsbilities are also tells you how often you are scheduled for a medical review) they will have to determine the VALUE of your volunteer work and if it equals $1090 a month or more it will terminate your entitlement. So you might just as well get paid for any work you do.
You are required to report changes in income, resources and/or living arrangements within ten days of the change. Keep the award notice; you won't get another one because even social security doesn't keep copies of computer generated notices. If you don't have your award notice then go to ssa.gov and print out what your SSI reporting responsbilities are - and set up a folder to keep notices in.
NOTE: One of the requirements for entitlement to disability benefits is that you must be unable to work and earn $1090 a month for at least a year. If someone returns to work within a year of disability onset date and they earn $1090 a month or more, Social Security will reopen the approval to a denial and any monies received will be considered an overpayment.
Source: I was a social security claims rep for 32 yrs.