Word of friendly advice... apply again on your own before you go to one of those SSI lawyers...
My Dad became handicapped about a decade ago well before retirement age due to health problems related to post-polio syndrome... he was in extreme pain and couldn't think clearly to work, was making mistakes and would have led to him getting fired... he was already going to a fistful of doctors and they couldn't even figure out what was wrong with him-- had him on a bunch of meds, most of which did little good. He applied for SSI and was denied (they usually deny virtually all claims the first time) and then reapplied and was accepted.
Those SSI lawyers on TV all the time (and the ones that aren't) typically will get anywhere from 1/3 to 1/2 your SSI benefits forever and the disability is already pretty slim as it is, meaning you live on a pittance while the shyster lawyer is raking in thousands a month from his share of all his "clients" benefits... There really aught to be a law against that sort of thing... I don't have a problem with a lawyer making a decent fee for his services-- that's only right-- but getting that big a share of folks' with problems benefits in perpetuity for a ONE TIME service (handling the case and hearing to get the benefits) is ridiculous... How those guys sleep at night knowing they're getting a third or more of some poor guy or girl's benefits while they're living hand to mouth is beyond me...
Anyway, best of luck to you and hope it works out...
Later! OL JR
25% or $6,000 maximum from the retro payment is the fee for this. I think that limit is set by Congress, I don't know that what you describe is allowed anymore. Mine starts from 2010 from that job in Colorado.