Tokyo Hinkon Joshi.

After her divorce, Kariya Mako returned to work as a contract editor for an economics magazine. There, she is ordered to be in charge of a serialization based on the theme of women in poverty. She interviews people living in various difficult situations, and it gradually makes her realize that this is a widespread problem that she herself is not entirely impervious to, as she is also someone dealing with employment instability while struggling to raise her children.
(Source: Drama Otaku)
~~ Adapted from the book "Tokyo Hinkon Joshi. Kanojotachi wa Naze Tsumazuita no ka" (東京貧困女子。彼女たちはなぜ躓いたのか) by Nakamura Atsuhiko (中村淳彦).