Anne Bale, a spokeswoman for DPW, said the asset test was a way to ensure that "people with resources are not taking advantage of the food-stamp program," funded by federal money.
In addition, Bale said, the test was related to DPW Secretary Gary Alexander's initiative to reduce waste, fraud, and abuse across all department programs.
Bale said DPW estimated that 2 percent of the 1.8 million Pennsylvanians receiving food stamps would be affected by the asset test.
The DPW plan caught many by surprise, but has been widely condemned by Philadelphia city officials, business leaders statewide, and advocates for the poor.
They point to federal statistics showing that Pennsylvania has one of the lowest food-stamp fraud rates in the nation: one-tenth of 1 percent.
In fact, the state recently won a federal award for running its program efficiently, federal officials say.
Moreover, about 30 percent of people who are eligible for food stamps in Pennsylvania and throughout the nation don't access them, making the entitlement program under-subscribed.
Critics of the DPW plan say it would particularly punish elderly people saving for their burials, poor people trying to save enough money to get out of poverty, and working- and middle-class people who lost their jobs in the recession and may now have to liquidate assets to feed their families.
"If conservatives want people to be less dependent on government, and reward work and entrepreneurship, then you have to allow low-income people to have a little bit of money in the bank," said Joel Berg, a national hunger expert.
The state's plan was announced to the U.S. Department of Agriculture in a Dec. 28 letter obtained by The Inquirer.