two-shift system; day and night shift schedule
Refers to a work schedule where two shifts (often day and night) alternate, common in factories, hospitals, and 24-hour operations.
This factory has introduced a two-shift system.
The night shift in a two-shift rotation is hard on the body.
two-shift work system
Compound of 二 (two) and 交替 (alternation, shift). The reading にこうたい follows standard on'yomi for both kanji.