A federal judge on Friday blocked the Trump administration from terminating the collective bargaining rights for a sizeable share of the federal workforce.

U.S. District Judge Paul Friedman ruled that a key part of President Donald Trump’s March 27 order can’t be enforced at roughly three dozen agencies and departments where employees are represented by the National Treasury Employees Union.

A union that represents 150,000 U.S. government employees filed a lawsuit on Monday seeking to block President Donald Trump from stripping hundreds of thousands of federal workers of the ability to collectively bargain with government agencies through their unions.