Deals & Cases
Lawsuit to Increase Child Support | A Case in Which the Full Amount, Including Unpaid Child Support, Was Recovered from the Husband
The client, who came to Daeryun to file a lawsuit for an increase in child support, is a case in which, in a situation where the former husband was not paying child support, the client recovered both an increase in child support and all of the past unpaid child support.
1. Lawsuit to Increase Child Support | The Story of a Client Who Needed to Respond
This is the story of a client who came to Daeryun to file a lawsuit to increase child support.
About ten years ago, the client divorced her former husband after their marriage broke down due to his frequent infidelity and domestic violence.
For Detailed Information
The client and the former husband had two minor children, and the client was designated as the custodian.
A conciliation was established under the condition that the former husband would pay the client 300,000 won per month in child support for each child until the day before each child reached the age of majority.
However, the former husband had never once paid child support for the children up to now.
Even after the client applied for an order to comply regarding the unpaid child support, the former husband reportedly paid no money at all.
As a result, the client stated that she needed to receive all of the past child support, and that because 300,000 won per month was far too little for raising the children due to rising prices, an increase in child support was necessary.
In response, Daeryun proceeded with the child support litigation.
2. Lawsuit to Increase Child Support | Relevant Definitions
The client intended to file a lawsuit to increase child support. The Supreme Court ruling of June 25, 1991 (Case No. 90Meu699) holds as follows.
Under Article 837(2) of the Civil Act, the modification of matters concerning custody once determined by the family court is possible not only when there is a special change of circumstances after the original determination but also when the original determination is found to have become unjust in light of all the circumstances prescribed by the said statutory provision, and even where the parties have determined matters concerning the custody of the child through conciliation and then request the family court to modify those matters, the family court may, after examination, at any time modify those matters where the matters set forth in the conciliation clause are found, in light of all the circumstances prescribed by the said statutory provision, to be unjust and is not limited to modifying them only when there is a special change of circumstances after the conciliation is established.
An increase in child support may be claimed in the following cases.
■A situation in which the financial burden has increased due to the growth of a preschool-age child or the child's advancement to a higher level of schooling
■A situation requiring treatment, hospitalization, and the like due to the child's illness or other reasons
■A situation in which there is a significant economic change due to a change in the custodial parent's workplace or salary
■A situation in which other matters concerning custody were unreasonably determined
3. Lawsuit to Increase Child Support | Matters of Assistance
In order to win the lawsuit for an increase in child support and to recover even the past child support from the former husband who 🔗failed to pay child support, our firm assembled a team of attorneys with extensive experience handling child support cases and provided the following assistance.
■ At the time of the divorce, the children were not yet even in elementary school, but they are now high school students, so the costs related to raising them have increased significantly compared to the time of the divorce.
■ At the time of the divorce, the former husband was unemployed and had no income, so the child support was agreed at 300,000 won per month, but he is now employed.
■ After the divorce mediation was established, the former husband did not come to see the children even once and did not pay any child support at all.
Matters That Should Be Reflected
Taking these circumstances together, the former husband must not only bear all of the past child support that he had not paid, but the increase in child support resulting from the changed economic circumstances and the children's growth must also be reflected.
In fact, the unpaid child support amounted to a total of 70 million won, and it was appropriate to increase the future child support to 500,000 won per month for each child until the month in which that child reaches the age of majority.
4. Lawsuit to Increase Child Support | Result of the Assistance

As a result of the assistance of Daeryun specialist attorneys in the lawsuit to increase child support, the court issued the following decision.
1. The respondent shall pay the claimant 70,000,000 won as past child support for the children concerned.
2. The respondent shall pay the claimant 500,000 won per month as child support for the children concerned, on the last day of each month, through the month that includes the day on which the children concerned reach the age of majority.
The Response of Daeryun Law Firm
Child support issues go beyond the mere payment of money and are directly tied to the stability of a child's daily life.
In particular, when past child support has gone unpaid or the current level of child support is not appropriate, the matter needs to be resolved through legal procedures.
The client, whose marriage had broken down and who had raised the children born of that marriage alone, was able to recover past child support and to obtain recognition of an increase in future child support through the assistance of Daeryun Law Firm.
Drawing on its experience with child support claims and increase cases, Daeryun Law Firm carefully reviews the facts and income structure to establish a response strategy.
If you are facing a situation that requires a response in connection with a claim for child support or an increase in child support, please confirm a response strategy suited to your current situation through a 🔗divorce attorney legal consultation appointment.
Daeryun, the ninth-ranked law firm in Korea (based on National Tax Service value-added tax filings for 2025), assists with cases on the basis of its accumulated experience.

This content is based on actual cases handled by Daeryun Law LLC and has been partially adapted. All copyrights belong to Daeryun Law LLC.
Unauthorized reproduction, copying or distribution may result in legal action under applicable laws.
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