The statement below would satisfy most conditions.
17024 Ethics Statement Regarding Disability
Should I become fully or partially disabled and unable to carry out the full responsibilities of a [Certification], I will immediately notify [CB] of the nature and extent of my incapacity. I will advertise and contract to undertake only those capabilities as a [Certification] which I am able to competently fulfill.
Sample: Should I become fully or partially disabled and unable to carry out the full responsibilities of a Certified Framing Carpenter, I will immediately notify The Carpentry Association of the nature and extent of my incapacity. I will advertise and contract to undertake only those capabilities as a Certified Framing Carpenter which I am able to competently fulfill.
In your policies & procedures, you’ll need to include a process that confirms receipt of the above statement, and somewhere records and advertises the disability extent of the certificant.