Prime Minister Sanae Takaichi defended her tendency to remain at her residence unless she has official duties outside, saying it lets her work long hours without burdening her staff.

“Work conducted at the official residence, such as meetings held there, is not reported as part of the prime minister’s daily schedule, but from my perspective it’s also a workplace,” Takaichi wrote on X on Saturday. In an unusual aside, she also expressed her surprise at spotting cockroaches at the residence.

Since becoming prime minister late last year, Takaichi has become well known for a round-the-clock working style and a preference for poring over documents alone at her residence. In July, she wrote on X that she gets only “zero to three” hours of sleep each night.