Concrete pouring at the Samsung Electronics Pyeongtaek campus semiconductor construction site stopped this week after union members blocked the facility's entrances [1].

The disruption affects one of South Korea's most critical technological infrastructure projects. Delays in concrete pouring can stall the entire construction timeline for semiconductor fabrication plants, which are essential for the global chip supply chain.

Ready-mixed concrete truck drivers launched the strike on Monday to demand an increase in transport fees [1]. The labor action lasted for approximately four days [1]. Union members physically blocked the access points to the site, preventing the delivery of materials necessary for ongoing construction [1].

The impact of the strike extended beyond the Samsung site. The supply of ready-mixed concrete was cut off from 105 different construction sites [1]. This disruption affected 22 large construction companies [1]. Reports also noted similar tensions at the SK Hynix semiconductor plant site in Yongin, Gyeonggi Province [1].

In an attempt to maintain operations, some ready-mixed concrete plants deployed their own direct-hire trucks, with one plant utilizing 10 such vehicles [1]. However, these efforts were largely insufficient to bypass the union blockades.

"The union parked trucks to prevent shipments," a ready-mixed concrete plant official said. "Now that it is over, they have decided not to go out" [1].

“The supply of ready-mixed concrete was cut off from 105 different construction sites.”

This strike highlights the vulnerability of high-tech infrastructure projects to localized labor disputes in the construction sector. Because semiconductor plants require precise and continuous concrete pouring for structural integrity, even a short-term blockade of transport fees can create significant bottlenecks for South Korea's leading chipmakers.