Why it exists
Life-cycle saving (Modigliani & Brumberg, 1954) and limits of public pensions (Diamond, 1977) motivate a second pillar beside national pension, with personal pension savings as a third. Since 2005 Korea has shifted from pure lump-sum severance toward funded DB/DC/IRP designs in a multi-pillar system.
DB, DC and IRP
DB promises a formula benefit with the employer bearing investment risk; DC deposits a share of wages with the worker bearing returns; IRP is an individual account that receives transfers across jobs.
| Type | Who bears investment risk | Core idea |
|---|---|---|
| DB | Employer | Benefit from tenure/wage formula |
| DC | Worker | Annual contribution rate |
| IRP | Individual | Portable pot + extra contributions |
Defaults that auto-enroll or auto-escalate raise saving (Thaler & Benartzi, 2004).
Tax, withdrawals, fees
Qualified annuity-style payouts often get favorable tax treatment; casual early withdrawals face limits and penalties. Fund fees compound against you. Don't confuse this tool with term or whole life—those insure death risk, not a retirement paycheck.
Checklist
- Know whether you are in DB or DC and the contribution rate.
- Open/maintain an IRP before your next job move.
- Rebalance risk as you near drawdown.
- Add expected national-pension income to spot the retirement gap.
FAQ
- Is it the same as severance pay?
- Related but not identical—pensions pre-fund; statutory severance rules still interact.
- What happens when I change jobs?
- DC/IRP balances are commonly transferred; compare tax on lump sums first.
Sources reviewed: 2026-11-06
References
- Modigliani, F., & Brumberg, R. (1954). Utility analysis and the consumption function: An interpretation of cross-section data. In Kurihara (Ed.), Post-Keynesian Economics. Life-cycle hypothesis behind saving for retirement.
- Diamond, P. A. (1977). A framework for social security analysis. Journal of Public Economics, 8(3), 275–298. Classic framework for why public pensions exist alongside private saving.
- Bodas, T., & related pension design / OECD. (n.d.). Pensions at a Glance (Korea chapters via OECD). International comparison of multi-pillar pension systems including Korea.
- 근로자퇴직급여 보장법. Legal basis for Korea's DB, DC and IRP retirement benefits.
- 고용노동부·금융감독원. (n.d.). 퇴직연금 제도 안내. Official guides to enrollment, transfers, early withdrawal and fees.
- Thaler, R. H., & Benartzi, S. (2004). Save More Tomorrow™: Using behavioral economics to increase employee saving. Journal of Political Economy, 112(S1), S164–S187. Behavioral defaults that raise retirement saving.
- Poterba, J. M., Venti, S. F., & Wise, D. A. (various). 401(k) and retirement wealth research overview. Research stream on defined-contribution accounts and retirement wealth.