WASHINGTON – The Obama administration's new plan to grant temporary work permits to many young, illegal immigrants who otherwise could be deported may cost more than $585 million and require hiring hundreds of new federal employees to process more than 1 million anticipated requests, according to internal documents obtained by The Associated Press.

The Homeland Security Department plans, marked "not for distribution," describe steps that immigrants will need to take – including a $465 paperwork fee designed to offset the program's cost – and how the government will manage it. Illegal immigrants can request permission to stay in the country under the plan by filing a document, "Request for Deferred Action for Childhood Arrivals," and simultaneously apply for a work permit starting Aug. 15.

Under the new program, which President Barack Obama announced last month, eligible immigrants must have arrived in the U.S. before their 16th birthday, are 30 or younger, have been living here at least five years, are in school or graduated or served in the military. They also must not have a criminal record or otherwise pose a safety threat. They can apply to stay in the country and be granted a work permit for two years, but they would not be granted citizenship.