If you're looking for manga similar to Kore wa Keihi de Ochimasen! Keiribu no Morikawa-san (Light Novel), you might like these titles.
At the recommendation of her grandma, 18-year-old Chise Kashima has just gotten her first job as an adult working at a construction company on the island. But it's far from her dream job of working in a fancy office, and everyone working there seems rather scary...?! This is the beginning of a hardworking rookie's work-life full of sweat and smiles!
Yuri Toraki, a nocturnal vampire, earns a living by working the night shift at a convenience store in modern-day Japan. While on his way home one day, he runs into a blonde woman who is entangled with a drunkard.
Suzumoriya Co., Ltd. is a Jam company whose the president is still elementary schooler. This is a comedy depicting the interaction between the loli president and the employees on this stage.
Satomi's mother has left her father, but Satomi still waits for her at the family stationery shop. When Satomi's father, who has become an otaku and given up on life, decides to close the shop, she begs him to turn it over to her instead. Yuuyake Rocket Pencil relates the struggles and triumphs of an elementary-school girl who runs a store on her own.