交替 こうたい せい労働 ろうどうではありませんでした
ni kō taiseirōdōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 二交替制労働

1. Was not alternating work shift.; Was not a two-shift system.

Past/Perfective
Negative
Polite
Formal Register