A union representing 28,000 workers for Samsung Electronics has called for the first strike in its history. 

The National Samsung Electronics Union (NSEU) is planning to hold a one-day protest by having its members all use paid leave on June 7, BBC News reports. The NSEU also says it may still hold a larger, multi-day strike down the road.

The union — which represents a fifth of Samsung Electronics' workforce — has reportedly been in talks with management for months, demanding a 6.5% pay raise and a bonus tied to the company's earnings. Without a deal in place, the NSEU is declaring its one-day work stoppage "in the face of the company's neglect of laborers," a representative said during a recent news conference.

A larger strike could have severe impacts on the global supply chain for a variety of tech products, given Samsung Electronics' status as the world's leading manufacturer of smartphones, televisions, and memory chips. In the meantime, the company tells BBC News that it plans to continue negotiating with the union.