Korea's production in overall industry rose over two percent in June compared to the previous month.
That's the biggest margin in more than three years and the first time those numbers have risen since April's ferry disaster.
Production in the mining and manufacturing sector went up nearly three percent from a month earlier -- the biggest increase since September 2009.
Statistics Korea attributes the rise to an increased output in semiconductors and metal processing driven by demand from both home and abroad.
Investment in plant and equipment went down by 1.4 percent from May but spending output edged up slightly by zero.3 percent signaling the economy might be emerging out of the sluggish spending trap following the ferry sinking.