I think ADHD causes unemployment, under employment, problems with employment, because people can be bored, find jobs understimulating, trouble get hired, get fired easily, under skilled, under educated.
What people who do not know they have ADHD, undiagnosed and untreated ?
It is compounded by other conditions such as dyspraxia.
I have dyspraxia, ADHD, aspergers traits (borderline asperger syndrome).