Labor Insurance Act Article 58-2
Insured persons who have conformed with the old-age benefit claiming criteria in first subparagraph of first paragraph and fifth paragraph of article 58 but have postponed in claiming the old-age pension benefit, extra 4% of the pension benefit amount calculated using the method in preceding article will be granted for each year of pension benefit claiming postponement with the upper limit of 20% extra.An insured person who has more than fifteen years of insurance coverage but doesn't reach the claiming age stipulated in first paragraph and fifth subparagraph of article 58 could claim for old-age pension benefit within five years in advance. However, 4% of the pension benefit amount calculated using the method in preceding article will be deducted for each year of pension benefit claiming advancement with the upper limit of 20% deduction.