Yahoo’s media unit laid off dozens of employees this spring — but some still aren’t getting the memo about controlling costs.

Financial chief Ken Goldman recently told his team to look for “red flags” on lavish spending, and insiders say that a few suspects were caught red-handed.

An executive assistant to Yahoo News Editor-in-Chief Megan Liberman “was recently fired for approving her own unusual personal expenses,” according to one insider.

Liberman, known for running a tight ship, was so incensed at her underling that she “refused to attend the meeting in which [the assistant] was terminated,” the source said.

Elsewhere, Yahoo Style Editor-in-Chief Joe Zee’s fiancé, Rob Younkers, has raised eyebrows by frequently joining Zee on Yahoo’s corporate jet to attend far-flung photo shoots.

One insider contends that Younkers is flying on the Yahoo dime “for no business reason other than to keep Joe Zee company.”

Another Yahoo source, however, says, “It’s hard to make these claims because [Younkers] is sometimes paid by Yahoo” for work as a “contributor.”

“If there are charges regarding Rob’s travel, it is work travel for Rob being a Yahoo contributor — not personal charges on behalf of Joe Zee,” said Jennifer Abel, Joe Zee’s publicist.

A Yahoo spokeswoman, reached on Friday by On the Money, declined to comment on the spending claims.