IMMEX and Shelter Operations: HR Considerations

Mexico's manufacturing sector has grown with nearshoring, and many foreign companies start through the IMMEX program or a shelter arrangement. These structures change how HR, payroll and compliance are organized. This guide covers the labor and HR issues to evaluate, not customs or tax details, which require specialist advice.

What IMMEX is

IMMEX is a Mexican program that allows companies to temporarily import raw materials, components and equipment for manufacturing or services and re-export the finished product with tax and customs benefits. Companies often call themselves maquiladoras. Operating under IMMEX requires authorization and compliance with customs, tax and labor obligations.

Operating directly vs. a shelter

With a direct operation, you create your own Mexican entity, hold the IMMEX authorization and employ your workforce. In a shelter arrangement, a local provider hosts the foreign company's production, providing facilities, permits and administrative services. Shelter models have been affected by the subcontracting reform, so the structure and the role of each party must be reviewed carefully.

Labor considerations in manufacturing

The workforce is often covered by a collective bargaining agreement, so identify which unions and agreements may apply. Shift patterns, overtime, night work and safety obligations are central. High turnover is a common challenge, which makes onboarding, attendance control and retention essential.

• Define shifts compliant with the legal limits
• Control attendance and overtime accurately
• Comply with workplace safety and health NOMs and set up the required committees
• Plan for profit sharing and seniority costs in your financial model

Payroll and attendance at scale

Manufacturing operations may have hundreds or thousands of workers, with multiple shifts and frequent hiring. Payroll accuracy depends on integrated attendance data from biometric devices, automatic overtime calculation, bulk IMSS filings and fast CFDI stamping. A scalable HR and payroll platform pays for itself quickly.

Workforce planning and retention

Labor competition is intense in industrial regions. Benchmark wages and benefits locally, offer transport or meal support where relevant, create career paths for operators and supervisors, and monitor turnover by line and by supervisor. Retention is often cheaper than constant recruiting.

Compliance checklist

Verify authorizations and annual reports, employer registrations, work rules, safety and health committees, training plans, NOM-035, contractor registrations (REPSE) where services are outsourced, and the accuracy of payroll and social security filings. Schedule periodic audits.

This article is general information, not legal, tax or accounting advice. Mexican law and tax rules change often: confirm current requirements with a qualified Mexican advisor before making decisions.