By Heekyong Yang HWASEONG, South Korea (Reuters) -Samsung Electronics workers in South Korea began a three-day strike for better pay on Monday, with their union flagging further action against the country's biggest conglomerate should demands not be met.

SEOUL: More than 6,500 Samsung Electronics Co. workers walked off the job Monday (July 8) to stage a rally demanding better pay, beginning the biggest organized labor action in the South Korean conglomerate’s half-century history.

After talks over salary and vacation time broke down last month, the largest union at the biggest company in the country has been busy planning for the three-day walkout. The one-day strike began in early June. The first in Samsung's 55-year history, has escalated to the planned action.