Coco Juku (COCO塾), which stands for Communication Competence, was an English conversation school (eikaiwa) in Japan.

[11] Article 23 of Japan's Labor Standards Act states that when a worker completes work for an employer their final payment should be paid within seven days.

In 2014 a Coco Juku employee who was resigning requested his pay within the seven days mandated by law, and was refused.

The General Union became involved and made contact with Nichii Gakkan, the parent company of Coco Juku.

[13] After the closing down of the company was announced in early 2019, instructors teaching English were offered either three months severance package or to be transferred to Gaba Corporation, also owned by Nichii Gakkan.