Parental leave policies in Japan are very generous, and allow both men and women to take partial-paid leave for up to a year. However, few men in Japan take advantage of this opportunity. A male Asics Corp employee is suing the firm for alleged harassment following his paternity leave. This employee has expressed that while many people would like to take advantage of parental leave, their workplace makes it difficult to do so. There have been a number of cases similar to this one, which have produced the phrase, “patahara” which is short for paternity harassment.
See "Japan parental leave case puts spotlight on workers' rights", Ritsuko Ando, Reuters, September 10, 2019