The thinktank that produced the union-sponsored study believes Disneyland workers would ideally need $23 an hour to make ends meet.
Disneyland employs about 30,000 people, while the deal covers about 8,600 of them.
He also sponsored a letter signed by 22 other members of Congress urging Iger to pay his workers a living wage.
The ballot initiative, which targets a large local hotel developer as well as Disneyland, would mandate further wage increases of up to $18 per hour by 2022 – by which time a state-imposed minimum wage of $15 per hour is set to kick in.