It's possible but by no means certain - not least because as the population as a whole becomes fatter it will be more and more difficult to find suitably qualified skinny candidates and the employers themselves may be portly (they're not called fat cats for nothing

) Then again if an employer is shown to be discriminating against the disabled obese then there will be repercussions (as there are for those employers who discriminate based on gender, age, religion and so on).
As it happens I think we've reached peak lard. The signs seem to show at least a flattening of obesity growth, so I don't see that as a problem.
Also, it's going to be very hard to prove discrimination. We're very careful to make notes showing we're not discriminating when we are.
One case occurred to me yesterday.
Two years ago, I recruited a National Operations Manager for a large public company. Salary was about $200k + $50-80k benefits. Very nice little earner.
The choice came down to two blokes of similar experience. One was average build, the other was bloody enormous. 5 foot 10 and weighed 147 kg/324 lb. Nice BMI of 46.4. How can I be so sure of the numbers?
The guy's weight was clearly an issue. Aged early 40s, he was round and clearly a candidate for problems caused by obesity. Easy: get both to go through a medical check, which he passed with no problems.
The only real difference between the two candidates was that the average-sized bloke was a good bloke, but a bit quiet. The big fella was quite charismatic, with a really pleasant personality that everyone bought into.
Two years ago, I very happily told the company to hire the big bloke, which they did.
In a world where the employer might have to fork out money to cope with disability that will almost certainly follow a bloke with a BMI like that, he wouldn't have made it to first base. I'd have dropped him as soon as I saw him.
To me, the opportunity is to work to tell these people NOW that their weight is a problem and they need to fix it because only they can. And if they don't, society will not be a party to providing for them.
Sitting back and allowing them the luxury of calling for help because they're too goddamned fat to climb the stairs seems to be detrimental to everyone.
Contrary to your statement to phiwum, it seems to me that you aren't too sad about it otherwise you'd have said something like "which is a shame" rather than "fine by me". IMO natch
Like I said, I have a strange sense of humour, which saves me from the loony bin.
If I allowed myself to feel sad over discrimination against fat people, I'd be in tears at the treatment handed out to transgender people, bawling my eyes out at kids being ill-treated by their parents, and a gibbering wreck at the thought of children dying of starvation and preventable disease.
It's a big, nasty world out there and I only have so many ***** to give.