As a former manager, I can tell you your chances of getting fired will most likely be cut in half by telling them and using the ADA language Fitzky suggested. In the US, it's illegal to fire you because you have a disability if you are able to do your job duties with reasonable accommodations.
After you tell them, if they still insist you sign the board, sign in "reasonable accommodations" or just "RA". Having to put up there that you're going to the restroom creates a hostile environment for you, also not legal. If your company is large enough to have an HR department, talk to them about
Good luck! You may just find that they're more than willing to work with you when they know the nature of your issue.
Judy - Southern US
Moderate to severe left-sided UC (21 cm) diagnosed 2001.
Avascular necrosis in both shoulders is my "forever" gift from Entocort.
Colazal, Remicade, Nature's Way Primadophilus Reuteri. In remission since April, 2006.
Co-Moderator UC Forum
Please remember to consult your health care provider when making health-related decisions.