The two sides are to read through their collective agreement clause once more, with management tabling a proposal and giving reasons for any demand it rejects, the union said in a statement on Tuesday.
The announcement comes right after the first post-mediation session at the Incheon Regional Labor Relations Commission.
"Post-mediation has no particular limit on the number of sessions, so it does not look likely to wrap up today," the union said ahead of the meeting.
The next session is set for 2 p.m. on Sept. 15.
Talks first collapsed on March 23, prompting a partial walkout in late April and a full strike from May 1 to 5, the first in the company's history.
The union has since refused overtime and holiday shifts.
The revised Trade Union Act took effect on March 10, curbing company damage claims against striking workers and widening the grounds on which unions may lawfully press a dispute.
AJP Takeaways
- Samsung Biologics and its labor union agreed on Sept. 8, 2026, to hold additional bargaining sessions observed by mediators at the Incheon Regional Labor Relations Commission, with a second post-mediation session scheduled for Sept. 15, 2026.
- The dispute over pay and personnel rules escalated after mediation collapsed on March 23, 2026, producing a partial strike in late April and the company's first full walkout from May 1 to 5, 2026, followed by a work-to-rule campaign refusing overtime and holiday shifts.
- Samsung Electronics unions called off an 18-day strike on May 20, 2026, after post-mediation at the National Labor Relations Commission, while South Korea's revised Trade Union and Labor Relations Adjustment Act, the Yellow Envelope Act, took effect on March 10, 2026, limiting damage claims against strikers.
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