I think you are obliged to meet whatever requirements were disclosed during the first appointment with OH
The employer is not automatically obliged to follow the recommendations. If they can demonstrate it is unreasonable then they don't have too.
Failure to disclose relevant information during the recruitment process was a potential gross misconduct sacking offence in one of my former workplaces
This is not the case in regards to disabilities. If the employer doesn't know they can't be blamed for not making adjustments but an employee can disclose at any time they choose and will be protected therein under the Equality Act.
Is the list of current requirements exhaustive and has it been assessed by OH, and has anyone made a formal view on whether she would have been approved for the role if she had not withheld relevant information?
If someone was turned down for a job based on additional (reasonable) adjustments due to disability it would be disability discrimination and the employer would be acting illegally.
Being unable to do 20% of the job description is a biggie (irrespective of whether it's a loved or loathed task)
It's really not. I've known individuals be on a 40% workload (so 60% reduction).
Altering everyone else's job description to cover her tasks is not a reasonable adjustment.
How they redistribute the workload is an entirely separate issue. It's totally irrelevant if the manager divvies it up or employs someone additional. It is up to these employees to raise an increase in workload with management.
The chair/equipment is (no matter the cost) and the medical appointment probably are (but can be unpaid, and staff can be asked to arrange them at least inconvenient times as possible within NHS system, and if using private physio, fitting them in outside work hours entirely would be the norm, though unpaid time off stil, OK when that really can't happen)
By and large correct if I'm not being pedantic
The best outcome (probably) would be an internal transfer to a post with tasks she do.
Transferring her to a different post rather than implementing adjustments first in the current post would not be best practice.
If however the decision is to eep her, she ought to move to 0.8 FTE to reflect the partial job description, and anyone taking on additional task shouid get overtime and/or bonus and/or payrise, as their job description has just been increased.
This would be illegal. If she is doing 80% in the full week, you can't deduct her wage. This would be penalising her for her disability. If it takes her longer/she finds it harder to complete the tasks well then she would still be on a 80% workload on the 0.8 week.