After a cancer diagnosis, the first conversation with an employer is usually not about treatment but about paperwork. Should you take leave or resign? If the leave is unpaid, what happens to health insurance contributions that keep accruing month after month and arrive as one lump bill on the day you return? Faced with that, many people conclude it is simpler to leave the job and claim unemployment benefits instead. The calculation is reasonable, but it mixes several programs that each rest on a different assumption, and getting the order right can matter more than the decision itself.
In Korea's employment insurance system, the job-seeking allowance generally rests on three conditions: enough insured employment before leaving (commonly at least 180 covered days within the 18 months preceding separation), a separation that was not caused by serious fault of your own, and — this is the part that surprises people — the intention and the ability to work, together with active efforts to find a new job. A separation at the employer's recommendation is usually treated as involuntary, but the final determination follows the reason recorded on the employer's separation certificate and the review by the local employment center.
The third condition is where illness enters. The common saying that you cannot receive benefits while you are sick is only half true. More precisely, the benefit is not forfeited — it can be postponed. The window for claiming is normally about one year from the day after separation, but if illness, injury, pregnancy, childbirth or childcare makes you unable to work continuously for a set period, you may apply to have that window extended by the length of the interruption. Once granted, the remaining benefit days wait until treatment ends. These applications carry deadlines counted from the day the inability began, so when a resignation date sits close to the first chemotherapy cycle, the calendar deserves attention before anything else.
If illness begins after payments have already started, a separate track exists as well: a sickness allowance paid in place of the job-seeking allowance for the days you cannot look for work, or a rescheduling of the unemployment recognition date. The design is less about excluding sick claimants than about counting sick periods separately.
Another widespread belief is that resigning for health reasons disqualifies you, so the stated reason should be changed. In practice, leaving because illness makes the work impossible — where the employer cannot offer a transfer or a leave of absence — can be accepted as a justifiable reason with a physician's opinion and employer confirmation. Recording a reason that does not match the facts, by contrast, exposes you to a finding of improper receipt, which can mean repayment plus additional penalties. Reporting the situation accurately and then choosing the track built for it is the safer path.
Worries about medical privacy are natural too. The employment center does not routinely browse your hospital or long-term care admission records. Employment and income are verified through social insurance enrollment data, and when you apply for an extension or a sickness allowance, it is you who submits the medical certificate. In other words, how much you disclose depends on which program you use.
Finally, revisit the health insurance question that started it all. During leave, contributions are reduced and deferred, then settled at return, which is why the bill looks alarming. After resignation, you move from employee coverage to regional coverage, where premiums are assessed on property and income and can be higher than expected. Someone who held employee coverage long enough before leaving may apply to continue paying at roughly the employee-level rate for a limited period, but that application also has a short deadline tied to the first regional premium notice. If premiums are the reason you are resigning, do not skip this comparison. Note that the reduced co-payment rate under cancer special-case registration is calculated separately from premiums.
A practical order: confirm any remaining paid sick leave or leave of absence under company rules; make sure the separation reason on the certificate matches reality; assess honestly whether you can job-search now, and if not, diary the extension deadline; compare continued employee-level premiums against regional premiums; and keep originals and copies of every document apart. Requirements and amounts change from year to year, so verify your own case with the Ministry of Employment and Labor helpline (1350) and the National Health Insurance Service (1577-1000) before deciding.
This article is general information and does not replace medical care or professional legal and administrative advice. Please discuss treatment decisions with your care team, and confirm eligibility and filing deadlines with the responsible agency.