I worked for a hospital where all preexisting conditions had to be listed (can't remember if this was prior to employment or afterwards, though). When I had a meltdown, some three years later, they had that information in their files already. It was fortunate that I had disclosed this information, because the insurance company might have had grounds for denying the claim if I had not admitted it up front. My policy is to not lie on any paper that you have to sign. Also, it's possible that declaring a disability would allow the employer to have some governmental leverage... like hiring a minority, such as Alaskan native, for example.

On initial application, however, some ask if you have a disability that requires accommodation or would impact your ability to work. I always answer "no" to that.

Oh...After I had been there for a year, and thereafter annually, all department heads were required to ask all their subordinates for a list of meds they were taking. My manager could easily have drawn the correct conclusion.