In February 2016, the then Park Geun-hye government ordered a total of 124 South Korean companies operating at the Kaesong Industrial Complex to return home, in retaliation for the North's continued provocations including a fourth nuclear test. The inter-Korean industrial complex had been regarded as the icon of inter-Korean reconciliation.

The Seoul government said it has provided 508 billion won in financial assistance to the closure-hit South Korean firms so far, which is equivalent to some 72.5 percent of the estimated damage of 700.5 billion won. The actual support, however, differs by business depending on their insurance programs.

Shin said the government did not fully recover the companies' losses by capping the support, which he claims led to legal battles between the firms and their subcontractors.

"The companies are undergoing a severe liquidity crunch as their sales and credit ratings plummeted following the shutdown," he said, demanding the government provide emergency funding based on the inter-Korean cooperation fund.

Late last month, the government said it plans to provide additional support to the companies, adding it has yet to finalize the details and the scale of the compensation.

The association also called for the government to continue with the tax benefits it provided to the firms until the operation of the complex is normalized. The companies were granted taxation and financial support measures until last year. (Yonhap)