Samsung Executives Make Rare Union Visit as Strike Fears Mount

Samsung Electronics Co.’s top management made a rare visit to leaders of the company’s largest labor union late Friday in an effort to revive stalled wage negotiations after government-mediated talks collapsed earlier this week.

Samsung shares fell 8.6% in Seoul trading Friday, underscoring mounting investor concerns over a strike that could disrupt operations at the world’s largest memory chipmaker. The union has threatened an 18-day walkout beginning May 21 if its demands are not met.

Chief Executive Officer Jun Young-hyun, who heads Samsung’s semiconductor business, along with three other senior executives, visited the union’s office in the ...