Today’s business slang is “Tsukiai-Zangyou”.
Even though one finishes the day’s work, he/she is forced to overwork with his/her boss, colleagues because they overwork. Some boss require employee to “Tsukiai-Zangyou”.
And in many cases he/she are requested to go for drink after “Tsukiai-Zangyou”.
We should network with friends who belongs to different industries, study for self-growth, or spend enjoyable time with your loved one. If you always be with the same company people, your eye-sight will be narrowed, which is not good.