The largest union representing U.S. government employees filed a lawsuit on Wednesday to block President Donald Trump's plan to reclassify up to 50,000 federal workers and make it easier to fire them.

Employees have until Feb. 6 to decide whether to take the buyouts offered by OPM or return to the office— in most cases, five days a week.

Here’s what we know about the deferred resignation program offered to federal employees by the Trump administration.

The Trump administration told about 2 million federal employees they can opt to resign by next week and get paid through September, as part of a sweeping effort to eliminate government jobs. Federal workers received an email Wednesday night saying they may indicate they’ll leave their jobs by typing six letters and hitting Send: “Resign.

It's only been a little over a week since President Trump took office, but already he's unleashed a ream of actions targeting the federal workforce — a sort of government death via a thousand cuts. Why it matters: This unprecedented stream of executive orders and memorandums is unsettling Washington households as people scramble to determine whether their jobs and livelihoods are safe.