I am feeling out Disability claim and the want dates worked from and to past 15 years

i understand what you are trying to ask and that is how does one go about getting their past work information. actually if you never understood perhaps if you get these records you'll keep it in a safe place for your retirement application as well. but if it has not been years since your last employment or other places of employment you can contact them and they might still have records. if you worked in the government, you can contact the office of personal management call the local operator for number.
i trust this was of some help to you and I understand that sometimes others are quick to be nasty because they themselves or anyone close to them never had a problem understand what they consider basic or something each person should just know!