The history of employment law has witnessed a move from mandates directed t
o workers as a whole, such as workers' compensation, to mandates directed t
o particular, identifiable groups of workers, such as the reasonable accomm
odation mandate of the Americans with Disabilities Act. These newer "accomm
odation mandates" are ordinarily analyzed using an economic framework devel
oped for mandates directed to workers as a whole. However, this framework y
ields misleading and incorrect conclusions when applied to accommodation ma
ndates. This Article offers a new framework for analyzing accommodation man
dates. The framework generates testable predictions about the effects of th
ese mandates-predictions that are largely confirmed by the existing empiric
al evidence.