Human Resources Mexico (HRM) vs Oyster HR

Oyster HR is one of the most recognized names in global employment. Human Resources Mexico (HRM) is one of the most experienced operators in Mexico employment specifically.

If you are hiring in Mexico and evaluating both, the comparison is not primarily about brand recognition or platform features.

It is about what each company actually is in Mexico, and how that affects the employment structure, compliance posture, and employee experience of the person you hire.

This guide covers every dimension that matters for a US, Canadian, or Australian company making this decision.

Quick summary

What each company is

Human Resources Mexico (HRM)

We are a boutique Employer of Record operating exclusively in Mexico since 2009.

Every employee hired through us receives a formal LFT-compliant employment contract with HRM as the named legal employer.

IMSS registration is filed under our own Registro Patronal, and CFDI 4.0 payroll receipts are issued and filed with SAT on every payday.

Our team is physically based in Mexico. Bilingual HR professionals handle every client and employee inquiry by phone or through Our support portal.

No AI chatbot responses. No offshore ticket queues. Every request is answered by a person who understands both the legal and human dimensions of Mexican employment.

We specialize in senior, high-compensation professionals with a minimum salary of MXN 550,000 gross per year (approximately MXN 45,833/month).

The fee is a single percentage markup on gross taxable salary, with no additional charges.

Oyster HR

Oyster HR is a global employment platform founded in 2019 that covers 180+ countries. In Mexico, Oyster operates through OYSTER HR MEXICO (RFC: OHM230629CT0), a registered Mexican entity in Mexico City.

Oyster's pitch is a technology-first platform experience: centralized dashboard, automated payroll, benefits management, Oyster Academy for professional development, and HR tooling across all geographies from one interface.

Oyster is the only B Corp-certified EOR, a meaningful ethical positioning for companies that prioritize social and environmental accountability in their vendor relationships.

Pricing is a flat $699 per employee per month on the standard EOR plan, or $499 per employee per month on the annual Scale plan.

The REPSE question

This is the compliance dimension that separates most Mexico EOR providers in 2026.

REPSE (Registro de Prestadoras de Servicios Especializados u Obras Especializadas) is Mexico's federal registry for specialized employment service providers, required under the 2021 outsourcing reform.

Any EOR operating legally in Mexico must hold active REPSE registration. Without it, the arrangement may be classified as illegal subcontracting, with the client company assuming joint liability.

HRM holds active REPSE registration, publicly verifiable through the STPS portal.

Oyster HR has a registered Mexican entity (OHM230629CT0), but as of 2026, public confirmation of Oyster's REPSE registration status is not available from Oyster's own materials or from third-party review sources. Multiple independent EOR review sites note this as an open compliance question for Oyster in Mexico.

Oyster's own Mexico EOR guide page acknowledges the 2021 reform and its implications. But acknowledging the reform is not the same as holding active REPSE registration.

The client company bears joint liability when contracting an EOR without active REPSE registration. This is not a theoretical risk. STPS inspectors are actively verifying REPSE status in 2026. Fines reach up to 50,000 UMAs (approximately MXN 5.86 million) per affected employee.)

Before signing with Oyster for Mexico employment, request their REPSE registration number and verify it directly on the STPS portal (repse.stps.gob.mx).

If they cannot provide a verifiable number, the engagement carries unresolved compliance risk under Mexican law.

Pricing: flat fee vs. percentage markup

This is a real structural difference, not just a formatting preference.

Oyster HR: flat fee model

Oyster charges $699 per employee per month regardless of the employee's salary level.

For a mid-level Mexican engineer earning MXN 70,000/month (approximately $3,889 USD), the Oyster fee represents roughly 18% of gross salary.

For a senior engineer earning MXN 120,000/month ($6,667 USD), the fee drops to approximately 10.5% of gross salary.

Additionally, third-party reviews consistently flag FX conversion charges on international payments as an additional cost not reflected in the headline $699 rate.

Oyster itself notes in its pricing content that employer taxes, 13th-month pay, and FX fees can add 20–50% or more to total costs.

The flat fee model has one advantage: it is predictable on the fee side.

The limitations: it does not scale down with salary, and add-ons for benefits administration and visa support are charged separately.

HRM: percentage of gross taxable salary

We charge a single percentage markup on gross taxable salary only.

Three things make this model distinct:

No flat base fee. There is no fixed monthly amount that applies regardless of what the employee earns or what services are used.

Tax-deductible benefits excluded from the fee base. Private medical insurance, gas cards, IAVE toll cards, food coupons, and expense reimbursements are excluded from the calculation. These are passed through at cost, not marked up.

The percentage decreases as salary increases. As salaries rise and IMSS and INFONAVIT statutory contribution caps apply, Our effective fee percentage decreases automatically. Clients who raise an employee's salary pay a lower proportional fee.

Support: platform vs. people

This difference matters more than it might appear when something goes wrong.

Oyster HR

Oyster is a technology-first platform. The primary interaction model for both client companies and employees is a software dashboard. Automated workflows handle contract generation, payroll confirmation, and compliance alerts.

Support is available, but multiple third-party reviews indicate that human support response times can lag, particularly for Mexico-specific questions.

One review site notes that Oyster's service consistency can vary due to reliance on third-party vendors, sometimes leading to delays or differing interpretations of local rules.

For a Mexico City employee with a payroll discrepancy on Friday, or needing to understand IMSS coverage before a Monday appointment, the primary support channel is a platform ticket.

HRM

Our support model is explicit: no AI chatbots, no automated responses, for clients or employees. Every request is handled by a bilingual HR professional based in Mexico.

This is not a differentiator that sounds impressive in a sales pitch and disappears in practice.

Our public policy is documented and confirmed in Clutch reviews: proactive, responsive customer support delivered by humans, with issues resolved within 1–2 days.

The Mexico-based employee has the same access to human support as the US company that hired them.

For a senior professional whose IMSS enrollment shows a lower salary than their contract, that question needs a human with IMSS expertise to resolve it, not a help center article.

Physical presence in Mexico: what "in-country" actually means

Both providers have a registered legal entity in Mexico. The distinction is what operates behind that entity.

Oyster HR registered OYSTER HR MEXICO in Mexico City (RFC: OHM230629CT0). This entity is the legal employer vehicle for Mexican hires. However, multiple independent reviews indicate that Oyster relies on local third-party vendors for Mexico compliance operations in some areas. There is no publicly documented physical HR office or Mexico-based payroll team specifically supporting Mexican employees.

We have operated a physical office in Mexico since 2009. The team is made up of bilingual HR professionals who were born, raised, and trained in Mexico. They work exclusively on Mexico employment. They do not split their attention across Brazil, India, or Germany. They manage IMSS registrations, SAT filings, NOM compliance, and employee inquiries for Our entire client base without any undisclosed intermediary.

The practical implication: for complex terminations, IMSS disputes, or SAT audits, Our Mexico-based team is in a different operational position from a global platform administering Mexican employment remotely.

Multi-country hiring: where Oyster has a genuine advantage

This is the area where the comparison tips clearly in Oyster's favor.

If your company is building teams in Mexico, Colombia, Germany, and the UK simultaneously, Oyster's 180-country platform delivers something HRM cannot.

A single vendor relationship, a single dashboard, and consolidated payroll and HR management across all geographies.

We are Mexico-only. If you need EOR in five countries, we handle one of them.

For US companies whose international hiring strategy is Mexico-first or Mexico-only, Our specialist focus is a strength. For companies running a multi-country remote hiring operation, Oyster's platform consolidation reduces vendor complexity.

This is an honest trade-off, not a hidden limitation. Know which describes your situation before evaluating either provider.

The B Corp difference

Oyster HR is the only B Corp-certified Employer of Record. This certification reflects verified standards for social and environmental performance, accountability, and transparency.

For companies whose procurement or ESG policies require vendor certification, or whose founders and talent teams prioritize working with companies that operate to a higher accountability standard, this is a genuine differentiator.

We do not hold B Corp certification. Our commitment to employee welfare is expressed through its operational model: treating employees as clients, providing human support, and paying PTU directly.

But it is not certified by a third-party standard.

PTU: a key financial difference

Mexico's profit-sharing (PTU) law requires employers to distribute 10% of pre-tax profits annually to employees. This is calculated on the employer entity's profits.

We pay our mandated PTU to employees directly and do not bill this back to the client company. The client knows their cost from the HRM fee structure, and PTU is Our obligation as the employer.

Oyster's PTU handling is addressed through their platform, but the specifics of how PTU is calculated and whether it is billed back to the client are not clearly disclosed in public pricing materials. This is worth confirming directly before signing, as PTU can represent a material annual cost depending on the EOR entity's profitability.

Who should choose HRM

• Companies hiring in Mexico only, or for whom Mexico is the primary international market

• Organizations that need a single, transparent fee with no platform fees or add-on charges

• Companies hiring senior professionals at MXN 550,000+ gross per year

• Employers where Mexican employee HR support quality is a retention and engagement consideration

• Companies that need active, verifiable REPSE registration before signing

Who should choose Oyster HR

• Companies building teams in Mexico alongside 3+ other countries and wanting a single platform

• Organizations whose ESG or procurement policies value B Corp certification

• Teams that prefer a software-first platform experience with a centralized dashboard for HR operations

• Companies hiring a range of salary levels where a flat per-employee fee is simpler to model

• Employers comfortable verifying REPSE status independently and relying on platform support for employee inquiries

Start with the right structure for Mexico

Human Resources Mexico (HRM) is a boutique Employer of Record with 17 years of physical presence in Mexico. We are the legal employer for every person hired on your behalf.

Active REPSE registration, third-party compliance audit, zero AI chatbots, and a dedicated Mexico-based HR team.

Every engagement includes:

• LFT-compliant employment contracts: Bilingual, named employer, fully documented

• IMSS registration within 5 business days: Under our own Registro Patronal

• Biweekly CFDI 4.0 payroll: Filed with SAT on every payday

• Full statutory benefits: Aguinaldo, vacation premium, INFONAVIT, AFORE, PTU

• Human support: Every inquiry answered by a bilingual HR professional in Mexico

• Transparent fee: Single percentage on gross taxable salary, no add-ons, no deposits

Get a custom HRM proposal and see exactly what your specific hire costs in Mexico.

Have questions about how Mexican employment law applies to your situation? Ask our Mexico EOR Specialist AI Chatbot for immediate answers, then speak with our team.

Frequently asked questions

What is the main difference between HRM and Oyster HR?

We are a Mexico-only EOR with 17 years of physical presence and active REPSE registration. Oyster HR is a 180-country global platform with a registered Mexican entity.

We operate with a Mexico-based HR team and percentage-based pricing; Oyster operates a technology-first platform at $699/employee/month.

Is Oyster HR REPSE registered in Mexico?

Oyster HR has a registered Mexican entity (OYSTER HR MEXICO, RFC: OHM230629CT0). However, public confirmation of Oyster's active REPSE registration number is not available from Oyster's own materials as of 2026.

Verify directly through the STPS portal before signing if REPSE compliance is a requirement.

How does HRM's pricing compare to Oyster's $699/month fee?

We charge a percentage of gross taxable salary with no additional fees. Oyster charges a flat $699/employee/month regardless of salary level.

For lower-salary profiles, Oyster's flat fee represents a higher effective percentage. For higher-salary profiles, Our percentage model may be more expensive in absolute terms. The comparison requires a salary-specific calculation.

Does Oyster HR offer human support for Mexico-based employees?

Oyster HR's primary support model is technology-first, with a platform dashboard and ticket-based inquiries. Some third-party reviews note slower response times and reliance on local vendor networks for Mexico-specific questions.

We provide 100% human support via bilingual HR professionals based in Mexico for both clients and employees.

Which provider pays PTU in Mexico?

We pay our mandated PTU obligations to employees directly and does not bill this back to the client company.

Oyster's PTU handling is managed through their platform, but the billing structure for this obligation should be confirmed directly during the sales process.

Does it matter that Oyster is B Corp certified?

For companies with ESG procurement policies or founders who prioritize working with socially certified vendors, yes. B Corp certification reflects verified third-party accountability standards.

We do not hold B Corp certification; its commitment to employee welfare is expressed through its operational model and service structure.