SAN FRANCISCO (AP) -- President Donald Trump's administration for now must stop firing workers during the government shutdown, a federal judge ordered on Wednesday.

U.S. District Judge Susan Illston in San Francisco said the cuts appeared politically motivated and were being carried out without much thought.

"It's very much ready, fire, aim on most of these programs, and it has a human cost," she said. "It's a human cost that cannot be tolerated."

She granted a temporary restraining order blocking the cuts sought by labor unions, saying she believed the evidence would ultimately show the job cuts were illegal and in excess of authority.

The decision came after federal agencies on Friday started issuing layoff notices aimed at reducing the size of the federal government. The layoff notices are part of an effort by Trump's Republican administration to exert more pressure on Democratic lawmakers as the government shutdown continues.

The American Federation of Government Employees and other federal labor unions had asked Illston for a temporary restraining order blocking the administration from issuing new layoff notices and implementing those that were already sent out. The unions said the firings were an abuse of power designed to punish workers and pressure Congress.

Illston's order came as the shutdown, which started Oct. 1, entered its third week. Democratic lawmakers are demanding that any deal to reopen the federal government address their health care demands. Republican House Speaker Mike Johnson predicted the shutdown may become the longest in history, saying he "won't negotiate" with Democrats until they hit pause on those demands and reopen.

Democrats have demanded that health care subsidies, first put in place in 2021 and extended a year later, be extended again. They also want any government funding bill to reverse the Medicaid cuts in Trump's big tax breaks and spending cuts bill passed this summer.

The Trump administration has been paying the military and pursuing its crackdown on immigration while slashing jobs in health and education, including in special education and after-school programs. Trump said programs favored by Democrats are being targeted and "they're never going to come back, in many cases."

In a court filing, the administration said it planned to fire more than 4,100 employees across eight agencies.

The unions say the layoff notices are an illegal attempt at political pressure and retribution and are based on the false premise that a temporary funding lapse eliminates Congress' authorization of agency programs.

The government says the district court lacks jurisdiction to hear employment decisions made by federal agencies.

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Follow the AP's coverage of the federal government shutdown at https://apnews.com/hub/government-shutdown.