An employee works at an assembly line of GM Korea's Bupyeong plant in Incheon, South Korea March 29, 2018. REUTERS/Kim Hong-Ji

SEOUL (Reuters) - General Motors’ South Korean unit has proposed suspending a second shift at its No.2 plant in the city of Bupyeong, an internal union newsletter seen by Reuters showed.

The newsletter said the proposal was made on Wednesday during a meeting with union delegates at the No.2 plant that makes Malibu sedans and Captiva sport utility vehicles.

A union official confirmed the newsletter, saying the union will oppose the move. A GM Korea spokesman did not have an immediate comment.