The two sides have already met for six rounds of fruitless discussions on the future of the estate in Kaesong, which was effectively shut down by North Korea in April as military tensions soared on the divided peninsula.
With South Korea starting an annual military drill with the United States on Monday, the result of the latest negotiations could determine whether the peninsula is sucked into another dangerous cycle of escalating hostilities.
Pak likened the negotiations to farming and said the recent break in an extended heatwave on the peninsula boded well.
"With the weather so good, I think we can tend the field well and can possibly reap good produce," Pak said, according to a pool report.
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An association representing the owners of the 123 South Korean companies in Kaesong said yesterday that the time had come to make a lasting deal on resuming operations.
The North had proposed the seventh round of talks last week, just hours after Seoul announced it was going to start compensation payments totalling USD 250 million to businesses impacted by Kaesong's closure.
The payout move was widely seen as the first step towards a permanent withdrawal from the zone.
Established in 2004 as a rare symbol of inter-Korean cooperation, Kaesong was a key hard-currency earner for the North and the decision to shut it down took many observers by surprise.
Pyongyang initially barred access to the park, then withdrew its 53,000-strong workforce from the South Korean firms.
Today's talks will be dominated by the same issue that deadlocked the previous six rounds: South Korea's demand that the North provide a binding guarantee not to close Kaesong again in the future.