The States agreed that a reasonable adjustment is a necessary and appropriate modification or adjustment, that does not impose a “disproportionate burden”, which a disabled person requires in order to be treated equally.
Just because someone falls within the definition of disability, does not mean that they would be entitled to a reasonable adjustment. Adjustments must be
“appropriate” and “necessary” and not represent a “disproportionate burden”. This ensures that the duty is focussed on the removal of barriers that actually
exist in a way that is sensitive to the needs of employers in terms of proportionality (taking account of available resources). So, if the person’s impairment has no practical effect in the context of the particular employer’s workplace, the employer would not have to make an adjustment as it would not be “necessary”.
The following gives the changes made in the development of the concept of reasonable adjustment locally.