On Monday, the National Assembly passed two laws to privatize the state-run railway organization, despite strong resistance from rail workers.

The move more or less narrowed the options at strike headquarters, compelling union leaders to consider further negotiations with the government after workers return to normal train operations.

The railway walkout, which began Saturday, has disrupted passenger and freight train operations across the country, as well as the metropolitan transportation system, causing especial inconvenience during the morning and evening rush hours.

Deputy Prime Minister for Economy Kim Jin-pyo reiterated Tuesday that the government will get tough on the on-going strike by state railway workers.

In a meeting with the heads of the nation's five major economic organizations, Kim said the government will take stern action against the four-day-old walkout which has come as an additional social burden.