If you're talking about applying for Social Security Disability Insurance, then the answer is a little complicated. The best thing for your claim would be if you were not working at all. However, you can still make a claim for SSDI benefits if you are working a little bit (making less than about $1000 per month, before taxes). No matter how bad it gets, if you can still work and make more than $1000 per month, Social Security will not consider your disability claim.
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