To switch EOR providers in Mexico, establish the legal route before ending anyone’s employment. A change of platform may leave the employer unchanged. A change of employer may qualify for statutory substitution, or require a lawful end to the existing relationship and a new employment agreement.
The decisive questions are whether a qualifying business transfer exists, whether the incoming service arrangement is permitted, and whether each worker can move on the proposed date. Payroll, benefits and employee consent follow that decision.
What changes when you switch EOR in Mexico?
Identify the Mexican employer on the employment contract, payroll tax receipts and IMSS registration. Compare its legal name and RFC with the proposed employer. A different brand or account manager does not establish an employer change.
| Situation | Legal mechanism to verify | Evidence required | Implication |
|---|---|---|---|
| Platform or intermediary changes; employer remains the same | Continuing employment with the same entity | Contract, RFC, payroll issuer and IMSS employer registration | Update administration and authorized data access; do not manufacture an employee exit |
| Different employer receives the relevant business or establishment assets | Employer substitution under LFT Article 41 | Transaction facts, asset-transfer documents and worker or union notification | Employment relationships continue if the statutory mechanism applies |
| Different employer; no qualifying substitution established | Lawful termination route and separate employment with EOR B | Actual termination basis, settlement, required consent and incoming agreement | Calculate outgoing rights and specify any additional service recognition |
| Incoming arrangement supplies personnel in a prohibited form | Arrangement must change before migration | Actual work, supervision, beneficiary activities and applicable registration | A provider switch cannot cure an unlawful structure |
Article 41 requires transmission of the assets of the business or establishment for employer substitution to take effect. Its temporary outsourcing concession ended in 2021. A worker list and a new contract alone do not establish this mechanism.
Separately, LFT Articles 12 to 15 prohibit personnel subcontracting and condition permitted specialized services on work outside the beneficiary’s corporate purpose and predominant economic activity, required registration and a written service contract. Check the provider’s activity and current status in REPSE. Registration alone does not establish that your actual arrangement qualifies.
Review the existing service and employee position
Give the client’s HR lead ownership of one transition file, with separate commercial and employment decisions. The federal private-sector framework applies nationally; collective terms, work-state payroll rules and the competent conciliation forum still need individual checks.
Commercial agreement
- Record termination notice, delivery method, renewal dates, exit fees and cooperation duties.
- Identify the actual outgoing and incoming employers, including any local partner.
- Confirm final invoice, funding, deposit reconciliation, refund conditions and surviving indemnities.
- Separate service termination from employee exit dates; agree an extension contingency before giving notice.
Employee arrangements
- Collect signed contracts, amendments, original service dates, collective terms and outstanding disputes.
- Verify salary, payroll dates, accrued vacation, premium payments, aguinaldo, bonuses and potential profit sharing.
- Identify protected leave, IMSS incapacity, benefit claims, immigration documents and permission expiry.
- Record equity-plan treatment, equipment, confidentiality obligations and any assignment or fixed-term restrictions.
Use the Mexico employment guide for general hiring requirements. For this switch, require written answers naming the employer, lawful arrangement, transfer mechanism and each unresolved worker dependency.
Establish transfer and continuity treatment
For qualifying substitution, Article 41 preserves the employment relationships. It also keeps the outgoing employer jointly responsible with the incoming employer for earlier labor obligations for six months, counted from notice to the union or workers. The social-security liability analysis is separate: LSS Article 290 uses its own conditions and written notice to IMSS. Keep both notices and do not treat commercial indemnities as releases from statutory liability.
Where substitution is unavailable, mutual consent is one termination basis under LFT Article 53(I). It must be real. Articles 33 and 987 govern written settlements and ratification before the competent conciliation authority or tribunal; accrued rights cannot be waived. Arrange the appropriate federal or local process for the actual employer and industry.
| Item | Statutory treatment to verify | Recognition or settlement needed | Who confirms |
|---|---|---|---|
| Prior service | Statutory continuity where Article 41 applies | For a separate new relationship, specify which future benefits and termination calculations recognize earlier service; preserve claims against A | Both employers and employment adviser |
| Probation | Article 39-D restricts repeated probation within the same enterprise or establishment | Do not automatically insert a new trial period; document the actual basis | EOR B and employment adviser |
| Vacation and premium | Vacation rights and minimum 25% premium under Articles 76 to 80 | Continuing relationship: reconcile balances; actual termination: settle amounts due, distinguishing used leave and premiums already paid | A calculates; B checks opening balance; employee verifies |
| Notice, severance and settlement | Actual termination basis controls; vendor cancellation is not a dismissal ground | Separate earned entitlements from any applicable indemnity, seniority premium or negotiated payment | A and employment adviser |
| Aguinaldo and profit sharing | Article 87 provides minimum and proportional aguinaldo; Article 987 protects undetermined profit-sharing rights in settlements | Assign payment responsibility and preserve later PTU claims where applicable | Both payroll teams |
| Protected leave and benefits | Existing statutory protections remain relevant; LSS Article 21 makes IMSS exits ineffective during temporary incapacity | Check each case before an exit; obtain actual private-benefit acceptance and effective dates | A, B and benefit administrator |
| Bonus and equity | Contract, award and plan terms determine treatment | Confirm vesting, payment dates and whether legal-employer change triggers an event | Client, plan administrator and employers |
| Work permission and assignment restrictions | Actual immigration category and underlying agreement control | Establish authorized work with B and required notifications; do not assume a new intermediary resets any clock | Employee, B and immigration adviser |
Have B and the insurer confirm coverage, exclusions and any waiting period in writing. Agreed service recognition does not establish the insurer’s acceptance.
Aguinaldo is at least 15 days’ salary for a full year, with proportional entitlement for shorter service, payable before December 20 under Article 87. In a fresh-employment switch, reconcile A’s settled portion separately from B’s obligation.
Set one coordinated cutover calendar
Use a conditional effective date, with one owner for every dependency. Mexican law caps wage-payment intervals at one week for material work and 15 days for other workers under Article 88. Align the actual pay schedule, rather than allowing a migration date to postpone wages.
Worked example, entirely hypothetical: A Mexican citizen performs a non-manual role and is not on protected leave or temporary incapacity. No qualifying asset transfer exists. Assume the actual service arrangement has been confirmed lawful under Articles 12 to 15. The employee voluntarily agrees to mutual termination with EOR A on November 30, 2026, followed by employment with EOR B on December 1. B agrees to recognize the original service date for future vacation entitlement and contractual termination calculations, with the scope written expressly. This does not convert the route into statutory substitution.
Assume A requires 30 calendar days’ commercial notice, accepts notice on October 30 and agrees service can end November 30 subject to the contingency. Assume B’s payroll input cutoff is November 25 and its approved December payroll and aguinaldo funding must clear that day. These are illustrative negotiated terms.
| Milestone | Dependency | Outgoing EOR | Incoming EOR | Client or employee action | Completion evidence |
|---|---|---|---|---|---|
| October 30, Friday: commercial notice | Exit analysis and documented extension option | Acknowledges proposed November 30 end | Identifies employing entity and route | Client sends valid contractual notice | Receipt and contingency agreement |
| By November 20, Friday: documents and records | Lawful model; agreed rights treatment | Supplies verified balances and draft itemized settlement | Supplies employment agreement and benefit terms | Employee receives drafts and questions contact | Documents and reconciliation log |
| November 25, Wednesday: payroll test and funding | Validated minimum records | Signs off final-pay inputs | Tests December payroll and confirms cleared funding | Client funds the approved total | Test report and funding receipt |
| November 27, Friday: incoming readiness gate | Legal route, documents, voluntary consent, permission, benefits and payroll readiness | Confirms settlement process and final-pay ability | Confirms signed agreement, December 1 start and benefit acceptance | Client checks evidence; employee confirms agreement | Completed gate record; no outstanding critical item |
| November 30, Monday: agreed employment exit | Readiness gate passed; ratification process ready | Completes agreed settlement, pays final amounts and files actual exit | Keeps incoming employment ready | Employee completes voluntary settlement process | Ratified settlement, pay evidence and filing receipt |
| December 1, Tuesday: new employment | All required permission effective | Delivers closing payroll records | Starts employment, benefits and IMSS enrollment | Employee receives access and contact details | Agreement, coverage confirmation and registration receipt |
| December 15, Tuesday: first B payroll | Approved December 1 to 15 calculation | Resolves any historical discrepancy | Pays once, issues payroll receipt and reconciles deductions | Employee checks receipt and bank credit | Payment, CFDI and exception closure |
| December 18, Friday: B’s proportional aguinaldo | Verified B-period entitlement and approved funding | Confirms A’s portion was settled | Pays B’s separately calculated obligation | Employee checks receipt | Separate calculation and payment evidence |
A pays the November 16 to 30 wage period on November 30. B pays December 1 to 15 on December 15. A’s private cover ends November 30 and B’s begins December 1, only if the insurer has accepted those dates.
IMSS enrollment rules require relevant worker registrations, exits and changes within no more than five business days. Plan the actual filings at cutover; that window is not permission to leave coverage unverified. A qualifying substitution instead needs the IMSS substitution notice, also within five business days.
The critical action dates above are weekdays. December 18 is an illustrative operational date before the statutory December 20 threshold, which falls on Sunday in 2026. November 16 is a mandatory federal rest day within A’s final wage period; this example assumes no work that day and ordinary paid-rest treatment. November 30 and December 1 are not Article 74 federal mandatory rest days. Check local electoral days, contractual closures and banks separately.
If the gate fails, the client activates the agreed extension and resets the calendar before A’s employment exit. If continuation with A is itself unavailable or unlawful, resolve the worker’s employment and authorized-work position before proceeding; an unpaid informal bridge is not the contingency.
Reconcile transition costs and cash
Keep accrued liabilities, vendor invoices and payroll funding in separate accounts. A later commercial refund cannot fund wages due now.
| Fee, liability or funding item | When due | Responsible party | Refund or settlement treatment |
|---|---|---|---|
| Contractual notice or exit fees | Actual agreement dates | Client under service contract | Confirm invoice and any disputed amount |
| A’s final wages and earned entitlements | Agreed lawful exit and applicable payment dates | A as employer; client funds as contracted | Itemize wages, vacation, premium and proportional aguinaldo |
| Applicable severance or negotiated compensation | Depends on actual termination basis | A; commercial allocation separately agreed | Never assume mutual consent removes every liability |
| Undetermined PTU or disputed historical rights | When determined or resolved | Actual obligated employer | Preserve employee entitlement and later contact route |
| B’s first wages, contributions, benefits and fees | Before B’s actual funding cutoff | B pays and files; client funds under contract | Separate live-period funding from imported history |
| Insurance or administration overlap | Agreed coverage and service dates | Allocated in writing | Can be deliberate; do not duplicate wages |
| Deposit, reserve or credit balance | Contractual reconciliation timetable | Party holding the balance | Match charges and refund evidence; no assumed release date |
A small balance that must be paid once
Assume the worked employee’s verified daily salary is MXN 1,000 and A owes four outstanding vacation days at termination. Assume the associated 25% premium has not already been paid.
Vacation settlement is 4 × MXN 1,000 = MXN 4,000. Premium is MXN 4,000 × 25% = MXN 1,000. A therefore includes MXN 5,000 gross for this isolated balance in the November 30 settlement, supported by vacation rules.
B records these four days as settled, rather than crediting another four payable days. Its agreed recognition of earlier service for future entitlement is recorded separately. If the route were statutory substitution, the continuing vacation entitlement would require different treatment; do not cash it out merely to simplify a vendor change.
For December 1 to 15, the assumed gross wage component is 15 × MXN 1,000 = MXN 15,000. B’s full approved funding also includes applicable employer charges, benefits and fees. Historical A earnings are not added to that live wage component. Neither figure is net pay or a complete final settlement; A must separately calculate all other amounts due.
For recurring costs beyond this transition, use the Mexico hiring-cost guide.
Test the first payroll and close the old arrangement
A parallel test means two calculations for comparison, with one authorized live payment for each wage period.
Mark each control pass or fail before release:
- Wage period: A ends November 30; B starts December 1. No missing day, duplicated live wage or delayed contractual payday.
- Historical records: Reconcile year-to-date taxable and exempt earnings, ISR withheld, payroll CFDI identifiers, aguinaldo and premium payments. Keep employer attribution and corrections visible.
- Withholding and contributions: Validate B’s calculation, contribution salary, IMSS movements, INFONAVIT deductions and applicable state payroll setup. Match actual employee identifiers.
- Benefits and leave: Verify policy acceptance, coverage dates, open claims, absence records and the MXN 5,000 settled balance.
- Filings and receipts: Each legal employer owns its required withholding, payroll receipts and filings. Assign corrections and year-end treatment under LISR Articles 96 to 99; do not blindly import A’s earnings as B’s payments.
- Cash: Match client funding, one bank release, deductions, contribution payments, invoices and later refunds. Keep an owner for every difference.
Exchange the minimum necessary records through restricted, encrypted access with a transfer log. Under the current private-sector data law, document purposes, privacy notices, consent or the applicable exception, recipient duties and security. Employee consent to employment changes is a separate question from lawful data sharing. Limit medical and other sensitive records to justified recipients.
If A delays or refuses records, the client’s transition lead escalates the cooperation obligation and B owns payroll validation. Minimum verified inputs include identity/RFC/CURP/NSS, signed terms and service history, wage dates, pay and withholding evidence, leave and benefit balances, deductions, coverage and work permission. Obtain lawful copies from the employee or appropriate official records where available. Reconstruct only when B validates a sufficient file. Otherwise defer the exit or extend A before it happens.
Give the employee a usable handoff
In the example, deliver the settlement draft, B agreement and rights schedule by November 20. Explain the employer change, what A settles, B’s agreed service recognition, pay dates, coverage conditions, data sharing and questions contact. November 27 is the assumed agreed response target, not a statutory employee notice period.
After completion, provide settlement and payment evidence, payroll receipts, benefit details and the appropriate employer contacts. Retain a route for future PTU, corrections and claims after the client’s commercial account closes.
Two employee situations that change the switch
Independently authorized worker: the worked Mexican-citizen case
The December 1 start can proceed only if the stated assumptions and November 27 gate are satisfied. A’s relationship ends by actual mutual consent, with settlement treatment confirmed; B’s new agreement specifies the recognition it gives. No new probation is assumed.
If the employee declines, that route is unavailable. The client’s preference to change vendors does not supply consent or create a lawful dismissal basis. Reassess the actual employment route and commercial timetable.
Employer-linked permission: the proposed date may fail
Now assume a foreign worker holds temporary residence and work permission connected to A’s job offer. Their actual authorization, permitted activity and expiry have not yet been cleared for work with B. B must verify its employer documentation and the required immigration route before the old employment ends.
Migration Law Article 52 distinguishes temporary permission associated with an employment offer from permanent residence with permission to work. Do not assume every employer change needs a new visa, or that a valid residence card authorizes every proposed job.
Residents must notify relevant work changes within 90 calendar days. That notification period does not authorize work outside existing permission. The employee owns the notification with B’s document support. If new authorization is required, it must be effective before that work begins. Keep December 1 conditional and defer if permission remains unresolved.
The provider change also does not establish a fresh immigration duration or erase protected leave, contractual assignment limits or prior service.
Questions about switching EOR in Mexico
Does ending the EOR service contract end employment?
No. The commercial relationship and employee relationship need separate treatment. Record which employer remains responsible for wages, benefits, filings and any lawful termination process after the commercial end date.
Can employees keep their original service date?
Qualifying statutory substitution preserves the employment relationships. Under a separate new agreement, specify the rights B recognizes and how A’s liabilities are settled. A general promise to preserve tenure does not establish Article 41 treatment.
Should employees resign to make the switch faster?
Do not start with resignation paperwork. Determine the mechanism and incoming readiness first. A supposed voluntary exit cannot replace actual employee agreement or waive accrued rights.
How long does switching EOR providers take?
There is no universal Mexico migration duration. The permissible date depends on the actual commercial notice, legal mechanism, employee process, records, immigration, insurance and funded payroll. The worked calendar is conditional, not a service-time promise.
Can the old EOR delete all records after the final invoice?
No blanket deletion instruction is appropriate. LSS Article 15 requires specified payroll records to be retained for five years. Other retention and claim requirements may also apply. Agree lawful retention, restricted access and deletion of unnecessary copies.
If you are considering Borderless AI, ask us to assess the actual Mexico arrangement and employee transition. Our EOR service covers contracts, onboarding, payroll and benefits. Confirm the proposed legal employer, case eligibility and cutover responsibilities before committing to an employee exit.
Rules checked October 30, 2026.
