This subject is a tricky one. I remember being at school when a number of very capable kids suddenly became dyslexic just before exams. They got extra time in their exams and many did a lot better than they would otherwise have done. The upshot in the workplace is that you should not expect special treatment. No client is going to ask for a document to be submitted by Monday but if you are dyslexic you can hand it in on Wednesday. If your presentation is not up to scratch the client is unlikely to make special allowances because you are dyslexic. My view is that in many societies we are developing a dependency/entitlement culture. You are dyslexic, I am rubbish at maths. I do not get special treatment neither should you. To me if you have dyslexia, it is up to you to seek the help you need to perform at the same level as your peers. It is up to you to tell your employer about your condition and/or to explain what help you might need. If you do this, any responsible employer would surely give you the help you need to perform to the right level. What I cannot accept if dyslexia being used as an excuse. I am not dyslexic (possibly numerically if that exists...) and I do genuinely sympathise but if you are going to cope in the corporate world and certainly in the consulting world, you have to front up, research the subject, figure out what support you need and make damned sure you get it. To me that responsibility is yours. If you do this and your employer does not want to support you you are with the wrong company and I suspect that this is a company which will not support other employees with other issues (pregnancy, illness, injury etc).Professionally speaking you have a responsibility to report anything which could impact on your performance. When my wife got pregnant, we did not tell people until the usual 12 weeks. I insisted to my wife, however, that I would tell my boss as soon as we knew. Why? because I knew that she might need extra support and that I might suddenly have to bail out on him if a crisis occured. It was my professional responsibility to alert him of what was happening. We talked, dealt with it and reached an understanding. With dyslexia it is the same principle. It could effect your work, your boss has the right to know and you have the right to expect the necessary support to ensure that you succeed in your job.