The short answer

A US PEO if you're hiring US employees. An EOR if you're hiring anyone outside the United States. The two products do different things in different legal jurisdictions and you can't substitute one for the other.

If you already have a US PEO (TriNet, ADP TotalSource, Justworks) and someone just asked you to hire in Berlin, your existing PEO can't do that hire. You need an EOR (also called a global PEO).

Safeguard Global pioneered the EOR category in 2009 and now serves 1,500+ organizations across 187 countries. Onboarding runs one to two weeks in most markets.

Proof: each US PEO's actual international structure

Each of the three major US PEOs has either built or partnered into a separate EOR product. None extended the domestic PEO.

ADP's own marketing page states that PEOs support US employees through co-employment, and that some EORs are marketed as global PEOs but are not true PEOs in the US legal sense.

A US PEO cannot be the legal employer of a German worker because German law requires a German legal employer with German registration, German payroll, and German employment contracts. The US PEO is not, and cannot become, that entity.

PEO vs EOR at a glance

A US PEO is a co-employment arrangement specific to US law. An EOR is the sole legal employer of your worker through its own legal entity in the country. "Global PEO" and "EOR" are interchangeable terms for the international product.

The decision

If you're hiring outside the US and don't have a local entity, you need an EOR. The only exception is 20+ employees in a single country with a long-term commitment, in which case start with the EOR and plan toward entity setup.

When NOT to use an EOR

This is the part most providers won't tell you.

Don't use an EOR if you're hiring US employees. A PEO is the right tool. EORs can technically operate in the US but the cost is higher and the structure is wrong for domestic hiring.

Don't use an EOR if you already have an entity in the country. Run payroll yourself or through a local provider. The EOR fee buys you the legal employer relationship through their entity, which is value you don't need.

Don't use an EOR at scale of 20+ employees in one country. Eventually the per-employee monthly fee crosses over the cost of running your own entity. The exact breakpoint depends on the country, but plan to evaluate entity setup once you're around 20 people in one place.

Don't use an EOR to "test" whether you should hire a contractor. EOR is for employment, not contractor management. If someone is working full-time on a contract basis, the question is whether they should be employed, not whether you should run them through an EOR.

Don't use an EOR if your "hire" is actually a vendor. EOR is for employees. Vendors are vendors.

Cost comparison

The break-even on entity vs EOR is roughly 20 employees in a single country, depending on the country.

Common mistakes

Mistake 1. Calling your PEO and asking about international. Your PEO will hand you off to a partner. The partner is rarely the strongest option in the market and you're paying through a contractual middle layer. Better to start with an established EOR directly. Safeguard pioneered this category and works with companies who outgrew their US PEO's international option.

Mistake 2. Hiring a contractor in another country because it's faster. It's faster until it isn't. Misclassification penalties are typically multiples of the unpaid taxes and benefits. The cost of doing it wrong is much higher than the cost of an EOR.

Mistake 3. Setting up an entity before you know whether you're staying. Entity setup takes months and costs serious money. If you're not certain you'll have 20+ employees in that country in 2-3 years, an EOR is the safer call.

Mistake 4. Assuming "Global PEO" means a US PEO with international features. It doesn't. Global PEO is industry marketing for EOR. They're the same legal product. If you're being sold a Global PEO, ask who the legal employer is. The answer should be "the provider, through their local entity."

Mistake 5. Comparing EOR providers on price alone. The legal substrate matters more. A provider with direct entities in your target country and 15+ years of operating experience gives you fewer layers of accountability and more compliance muscle when something goes sideways. Pioneer-era providers have seen the edge cases newer entrants haven't.

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