OKS Auto-Enrolment Explained: The 60 Days That Decide Your Workplace Pension

If you start a job in Turkey, a pension contract can be opened in your name before you have found the coffee machine. That is OKS, the otomatik katilim sistemi: automatic enrolment of employees into a workplace pension, with a 60-day window to walk away. Most people make that decision by default rather than on purpose. This explainer gives you the 2026 rules so the decision is yours.

How the mechanics work

• Your employer selects a pension company and plan; eligible employees are enrolled automatically.
• Contributions are deducted from salary, at the statutory default rate, into the plan's funds.
• You have 60 days from enrolment to opt out (cayma) and recover your contributions.
• Stay in past the window and you receive a one-off initial state contribution, halved in 2026 from 1,000 TL to 500 TL.
• Ongoing contributions earn the standard 20% state match, and OKS funds carry a total expense cap of 1.09% a year with no entry fees permitted.

Note who chooses the plan: your employer, not you. Your choices are whether to stay, how much to contribute above the default, and which funds within the plan's menu to hold. That makes the employer's provider selection the single most important OKS variable, and most employees never ask about it.

The katilim dimension: your default may not be interest-free

OKS plans come in conventional and katilim variants, and employees inherit whatever the employer picked. If your employer selected a participation plan, your contributions flow into interest-free defaults: lease certificate funds, participation accounts, TKBB-screened equities. Employers can choose from providers including Katilim Emeklilik, Bereket Emeklilik and Garanti BBVA Emeklilik, whose katilim OKS funds all run at a published 0.85%, comfortably under the 1.09% cap and one of only three published fee points in the entire katilim fund market. We compare the field in our OKS plan comparison.

If your employer chose a conventional plan and you want interest-free treatment, ask HR whether a katilim option exists in the arrangement. Employees cannot unilaterally switch companies inside OKS, which is precisely why interest-sensitive employees should raise it collectively; employers can and do offer participation plans when asked.

Opt out or stay in? The honest arithmetic

The case for staying: a 500 TL welcome bonus, a 20% match on everything you contribute, a hard 1.09% fee cap, no entry fees, and forced saving that survives your own procrastination. The case for opting out is thinner than most people assume. Recovering your two months of contributions buys you nothing the system was taking away; the same money outside the wrapper earns no match. The honest reasons to opt out are genuine cash flow distress or a conventional-only plan you object to on compliance grounds with no katilim alternative available. Inertia is a bad reason to leave and a fine reason to stay; the system is built that way deliberately.

OKS is not full BES, and the differences matter

• Fees are capped lower: 1.09% versus up to 2.28% for equity funds in individual BES.
• No entry fees or the five-year management deduction schedules that individual BES contracts commonly carry.
• The 2026 stay-in bonus is 500 TL; individual BES has no equivalent welcome payment.
• Fund menus are narrower; individual BES contracts and BEFAS give far wider choice.
• Job changes move the pot: your OKS savings follow you to the new employer's arrangement or can continue individually.

The practical takeaway: OKS is the cheap default layer, individual BES is the flexible upper layer, and serious retirement savers in Turkey often run both. The full BES rulebook, including this year's match cut to 20%, is in our state contribution explainer, and the opening process is walked through in our BES how-to.

Frequently asked questions

What happens to my OKS money if I change jobs?

Your accumulated savings and vested state contributions move with you. If the new employer runs OKS, you continue in their arrangement; the system is designed for portability, so job mobility does not forfeit the pot.

Can I contribute more than the default deduction?

Yes, you can raise your contribution rate above the statutory default, and the 20% state match applies to what you put in, subject to the annual cap shared across your pension contributions. Given the 1.09% fee cap, OKS is often the cheapest wrapper you have access to, which makes topping it up more attractive than most employees realize.

I opted out years ago. Can I get back in?

Re-enrolment happens periodically under the auto-enrolment framework, and you can always open an individual BES contract regardless. The 500 TL bonus attaches to staying in after an OKS enrolment; the 20% match is available in both systems. For choosing an individual plan, start with our retirement hub.

Who manages the money in a katilim OKS plan?

The pension company issues the funds and an asset manager runs the portfolios. In practice the katilim OKS market concentrates around a few managers: Ziraat Portfoy, for example, manages the fund menus of both dedicated interest-free pension companies. The employee-facing questions remain the same regardless of manager: what is the actual expense ratio beneath the 1.09% cap (Garanti's published 0.85% is the market's reference point), what do the default funds hold, and does the provider publish its advisory committee and compliance documents. Those are the criteria our comparison scores, and the same fee diligence workflow from our fees explainer applies inside OKS too.