Elon Musk could be on the hook for breaching building codes after it was discovered that conference rooms are doubling as sleeping quarters at the Twitter HQ.

Employees told Forbes that four to eight bedrooms “featuring unmade mattresses, drab curtains and giant conference-room monitors” have been set up on each floor of the building. Building inspection staff with the city of San Francisco has committed to investigating the complaint, according to CoStar, though a date has not yet been set.

"We need to make sure the building is being used as intended,” Patrick Hannan, a spokesperson for the Department of Building Inspection, said in a statement. “There are different building code requirements for residential buildings, including those being used for short-term stays. These codes make sure people are using spaces safely.”

Musk has been notoriously aggressive in his $44B takeover of the beleaguered tech company, firing about 3,700 employees since the October acquisition and insisting those who remain return to the office full time or find work elsewhere.

In response to the complaint lodged with the city, Musk said on Twitter he was “providing beds for tired employees.” In another since-deleted post, he said he would also sleep at the HQ “until the org is fixed.”

It isn't uncommon for Twitter employees to work odd hours. Evan Jones, product manager for Twitter Spaces, used the hashtag #SleepWhereYouWork just days into Musk’s acquisition of the firm, according to Yahoo News.

Others are less enthusiastic about Musk’s stance on work-life balance.

“It’s yet another unspoken sign of disrespect,” a staffer told Forbes. “There is no discussion. Just, like, beds showed up.”