Workplace Pension Providers: Master Trusts, 401(k) Recordkeepers, Super Funds and Pension Companies

What is the difference between auto-enrolment, mandatory and voluntary plans?

Every retirement offer sits on three layers. Statutory social security is paid through payroll at rates set by law, and you cannot choose the provider. The second layer is a workplace scheme the law requires: in the UK and Türkiye employers must automatically enrol eligible staff, in Australia employers pay a fixed superannuation guarantee into a fund, and in Nigeria, Mexico and Colombia contributions go into individual accounts run by licensed administrators. The third layer is voluntary: a US 401(k) match, an employer-paid group pension in Türkiye, a German company pension or contributions above the legal minimum.

Auto-enrolment puts people in by default and lets them opt out. The UK requires at least 3% from the employer and 8% in total on qualifying earnings, while Türkiye's current system enrols employees with an employee contribution and no employer share. Voluntary plans such as a US 401(k) are optional for the employer, which is why the match becomes a headline item in offers. This directory lists the providers employers choose or work with in the second and third layers; purely public schemes are not included.

Defined contribution or defined benefit: what are you promising?

A defined contribution (DC) plan promises what goes in. Employer and employee contributions build an individual pot, and its final value depends on investment returns and charges, so the employee carries the investment and longevity risk. Almost all new workplace plans are DC, including UK master trusts, US 401(k) plans, Australian super and Turkish group pension plans.

A defined benefit (DB) plan promises what comes out: a pension based on salary and years of service. The employer carries the funding risk, must cover deficits and faces regular actuarial valuations. Most private-sector DB plans in the UK and US are closed to new members, and the Netherlands is moving its schemes to a contribution-based model. Hybrid designs such as cash-balance plans sit in between. If you acquire a company with a DB plan, treat it as a balance-sheet liability and take actuarial advice.

Master trust, umbrella fund or recordkeeper: which provider model fits?

Provider choice matters most where the employer picks the scheme. The labels differ by country, but the models repeat.

Small employers usually join a multi-employer arrangement, such as a master trust, an umbrella fund or a pooled 401(k), rather than set up their own scheme. Larger employers can negotiate custom fund ranges, governance input and service levels.

How are workplace pension providers paid?

Most charges fall on members and are deducted from their pots, so the total member cost matters more than the employer fee. Compare providers on the full charging structure rather than a headline rate.

Public and not-for-profit schemes often charge employers nothing and recover costs from members. Technology-led providers may bundle payroll integration into an employer fee, and US recordkeepers typically combine per-participant and asset-based fees, sometimes with revenue sharing from funds. Ask for a written fee disclosure and review it every few years.

How should you design the match and govern the default fund?

A match rewards people who save: the employer adds a set amount for each unit the employee contributes, up to a cap. A flat contribution reaches everyone, including lower-paid staff who cannot afford to save. Many employers combine both. In the US, a safe-harbor design simplifies compliance testing and is what candidates recognise. Vesting schedules are normal for US matches and Turkish group plans but restricted elsewhere, so check local rules. In the UK, salary sacrifice has long reduced National Insurance on contributions; a cap announced for April 2029 changes the maths for higher earners.

Most employees never make an investment choice, so the default fund is the real product. Review its risk profile, charges and performance against its objective, and confirm how it reduces risk as members approach retirement. Governance depends on the model: trustees run master trusts and umbrella funds, independent committees oversee contract-based plans, and US plan sponsors are fiduciaries who must monitor fees and funds. Set a review cycle and record decisions.

Finally, state the pension in the offer letter as a percentage, a payment timing and a provider name. A specific promise is clearer to candidates than a phrase such as a competitive pension.

Frequently asked questions