Most people can and still do work either part time or full time when they have fibromyalgia.
Having fibromyalgia can make it difficult for some people to work certain jobs such as jobs that require heavy lifting, physical labor etc.
Even when a person has fibromyalgia they usually still need to work a job to make a living and support themselves and family.
Having fibromyalgia does no easily qualify the person for SSDI which is Disability Income Payments because fibromyalgia can be hard to prove.
It's possible to get disability payments approved for fibromyalgia though but your symptoms have to be really severe that you cannot even work a desk job.
Even then it can take several years of fighting for the disability payments to even get approved for the disability payments for fibromyalgia.
Back pain is even hard to get disability payments for.