No! We have never told any of them!
Most of the time our work people do the work just fine. There have been odd times through the years when things break down a little (the last couple of months for us, for instance) but we manage it without the need to expose ourselves. For instance in this recent episode we have told the employer that current work stresses are triggering old things, and we have told the employer what we are doing to address that (short term counselling and a mindfulness course, which work is covering for us anyway). But we have never told any of them about the DID.