We could take countries like Finland as an example and keep the power in the parliament. It would be very similar to how constitutional monarchies work, but without the monarchs.

In my country it signifies how much of your pre-disability salary you’re able to make given your circumstances. If you there is no effect on your performance, you have a disability of 0%. If you can’t work at all, it’s 100%. If it’s more than 35%, you can get a disability allowance. This is all in relation to work and the associated allowance and doesn’t signify how severe your disability is in other contexts.