Trump 2nd term updates: Trump excludes low-value shipments from looming tariffs

Leadership at the Treasury Department sent an agency-wide email Monday morning instructing all employees -- including those at the IRS -- to comply with OPM’s email by tonight’s deadline, according to an email obtained by ABC News.

“By now, you should have received an email from OPM requesting information on your accomplishments over the past week. If you are not on leave Monday, you are required to respond before the deadline,” wrote John York, a senior counselor to Treasury Secretary Scott Bessent, according to the email.

The email has left some employees confused, particularly because it does not clarify whether failure to respond by the deadline could result in termination as Elon Musk threatened on X.

One IRS employee told ABC News that when they asked their direct management whether not responding would result in them being fired, they were told, “We are only to adhere to official emails and ignore any directives not communicated through official channels.”

Another employee in management at the IRS said staff are "freaking out."

-- ABC News' Will Steakin

Employees at the Justice Department do not need to respond to the OPM email sent over the weekend, according to an email obtained by ABC News.

"Due to the confidential and sensitive nature of the Department's work, DOJ employees do not need to respond to the email from OPM," an email to main justice employees from the assistant attorney general for administration and obtained by ABC News says. "If you have already responded to this email, no further action is needed."

DOJ joins other agencies in offering guidance on how to respond to OPM's request for employees to describe what they did that week.

--ABC News' Luke Barr

Speaking to Fox Monday morning, Transportation Secretary Sean Duffy explained why Department of Transportation employees should respond to Musk's email demanding they list five accomplishments over the past week.

"If you can't come up with five things that you did, maybe you shouldn't be employed here," Duffy said, calling this an "easy task" that "happens in the private sector all the time."

Monday morning, DOT employees also received an email instructing them to "respond as requested" to OPM's messaging.

– ABC News' Sam Sweeney

A group of federal unions are alleging that the Office of Personnel Management's demand that federal employees list their accomplishments or resign violates federal law and exceeds the power of the presidency, arguing the president has perpetuated a "massive fraud" on government workers.

They asked a federal judge in California to immediately issue an order blocking the Trump administration from continuing to fire employees en masse as well as reinstate the federal employees it has already laid off.

-- ABC News' Peter Charalambous