But the circumstances of this one are indeed unusual: The politician is Japanese Environment Minister Shinjiro Koizumi, 38, and the reason it's making news is because so few men take paternity leave in Japan.
He will not take the weeks off consecutively and said he expected to work remotely or have shortened days during the leave period - which will be spread over three months from his child's birth.
With Japan facing an ageing population and a dwindling birthrate, the government recently began promoting paternity leave.
Shinjirō Koizumi, a media-savvy 38-year-old, married to a former television anchorwoman, told a ministry meeting it had been a hard decision to balance his duties as minister and his desire to be with his newborn.
He is the second son of popular former Prime Minister Junichiro Koizumi, and is seen as a rising star in Japanese politics.
"Honestly, I thought a lot about how I can take time off while still fulfilling my public duties", Koizumi said at a ministry meeting. Some other lawmakers initially criticised Koizumi's interest in taking parental leave, saying he should prioritise his duty to the public.
Overseas, New Zealand Prime Minister Jacinda Ardern made headlines when she took six weeks of maternity leave in 2018. And of those men who take any leave, more than 70% are away for less than a fortnight.
A handful of men have sued their employers alleging they were subject to what is known in Japan as "pata-hara", short for paternity harassment, after taking parental leave.
"We need to assure that there's work-life balance so that children can spend time with their parent and parents can spend time with their children", Glen Wood, one of the men who filed the lawsuit, reportedly said at the time.
He has been discussing the idea of taking paternity leave since past year, triggering heated debates. Social media also lit up with mixed reactions to his announcement.
He has said Japan should eventually get rid of nuclear reactors, but he has also called for a low-carbon future, although he has yet to propose specific policies on how Japan should wean itself from its dependency on coal.
Shintaro Yamaguchi, a University of Tokyo professor and expert on labour economics and parental leave policies, said that even short-term paternity leave can make a difference, citing studies overseas.