[Update: July 8th] From the comment below it seems that the government and business are now arresting unionists for damages and political action before they have a chance to strike. Arrests with a similar determination seem to have been targeted at the Korean People's Alliance against the Korea US FTA last week, with their offices raided and two of their organizers arrested.
A quick roundup of some recent stories:
1) Seems that Daum, Korea's largest internet portal, has closed down the site of unionist trying to form a union at their company. This case should perhaps become a landmark freedom of association case if taken up by the NHRC, we'll just have to wait and see.
2) Metalworkers are continuing a fairly large strike against the FTA. As usual the government is planning police action against them. There have also been small backlash protests, reported more that the actual strikes themselves, against the unionist for striking over what does not appear to be a workplace issue -- ruling groups love to set what they see as the acceptable (at best, enterprise unionism) and unacceptable (any wider form of social solidarity) forms of unionism.
3) Both the Korean times and MWTV have been reporting on the plight of foreign workers who put on the dancing shows and other events at Samsung Everland. All this after the Migrant Trade Union began its campaign to draw attention on the sorts of abuses that have been happening there. Read more over at the CINA blog.