Global Mobility Governance for Corporate Groups

Turning ad-hoc transfer decisions into a repeatable process: a decision-rights matrix, tiered approval paths and a standard document pack.

In most multinational groups, moving an employee across a border is rarely a single decision. It is a chain of smaller, uncoordinated ones — a line manager agrees a start date, HR drafts an offer, payroll is told only when the first salary run is due, and the tax and legal functions frequently learn of the assignment once something has already gone wrong. Whether the flow is inbound to a Polish or other local entity, outbound from it, or between two entities in third countries, the same failure pattern recurs.

The result is fragmented compliance: A1 certificates ordered late or not at all, tax positions taken with no assessment of permanent-establishment or economic-employer risk, immigration steps discovered only after the employee has relocated, and costs that nobody in the group is tracking. A global mobility policy is the internal answer to that problem.

A policy of this kind is not, as a rule, a legal instrument in the strict sense. It is a governance framework: it sets out who decides what, in which order, and on the basis of which documents. This article focuses on the three load-bearing components of such a policy — the decision-rights matrix, the approval paths, and the standard document pack — and then maps them onto the four compliance regimes that every cross-border move touches.

Why a corporate group needs a formalised policy

In practice an intra-group transfer seldom travels through a single channel. It is initiated by a line manager or an HR business partner in one entity; the tax function hears about it later; payroll only when a payment must be set up; and legal, not infrequently, once a problem has surfaced. A formalised policy converts that scattered, personal knowledge into a repeatable process — one that survives staff turnover and the differences between jurisdictions.

The case for formalisation rests on a handful of recurring benefits:

• Controlled compliance exposure. Cross-border mobility engages four regimes at once — social security, tax, labour law and immigration. A gap in any one of them creates risk for the whole group, not just the entity that arranged the move.
• Fewer scattered decisions. One process replaces a dozen local variants in which each entity solves the same questions from scratch.
• Cost transparency. A long-term assignment is not just salary; it also carries tax charges, gross-ups, relocation benefits and advisory fees. Without an up-front estimate, those costs surface late.
• Employee experience and duty of care. A consistent service standard reduces the chance that an employee ends up abroad without a settled social-security, tax or residence status.
• An audit trail. A documented decision path makes it far easier to defend the group’s position in an inspection by a social-security authority, a tax administration or a labour inspectorate in the host state.

A common scoping mistake

The most frequent error is drawing the policy too narrowly — confining it to classic, long-term assignments. In reality it is short business trips and cross-border remote work, treated informally as “minor”, that increasingly generate exposure on the social-security side (A1) and around permanent establishment. A workable policy captures these lighter forms of mobility as well.

The decision-rights matrix (RACI)

The heart of the policy is a decision-rights matrix that maps roles to each stage of the process. The usual model is RACI: R (responsible — does the work), A (accountable — owns and approves), C (consulted), I (informed). The governing rule is simple: every stage has exactly one “A”, even where several functions are involved.

In a typical group, eight roles take part: the global mobility / HR function, the tax function, the legal (employment) function, payroll, the immigration function, the sending company, the host company and the employee. The matrix below arranges their involvement across the successive stages of a transfer.

Separating “accountable” from “does the work” matters here. Global mobility usually coordinates the process, but the substantive calls — the double-tax-relief method, or whether a permanent-establishment risk exists — stay with the tax function, often supported by an external adviser. The matrix should reflect that split, so the coordinator does not end up making determinations outside its competence.

Tiered approval paths

The matrix says who does what; the approval paths say in what order and under what conditions. Good practice is to differentiate paths by risk level, so that a short intra-EU trip does not run through the same circuit as a permanent relocation to a third country. The tiers below are illustrative only — each group sets its own triggers, based on its scale of mobility and its tolerance for risk.

Whatever the path, it is worth building in a few “gates” that cannot be skipped:

• Tax gate. Before the transfer is confirmed, the tax function assesses residence, the double-tax-relief method under the applicable treaty, and the permanent-establishment and economic-employer risks.
• Social-security gate. Confirmation of the applicable legislation and issuance of the A1 before work abroad begins.
• Immigration gate. Verification that the residence and work-authorisation pathway is feasible, before a start date is fixed.
• Cost gate. Sign-off on a total-cost estimate that also captures tax charges and any gross-ups.

It is also worth defining a clear escalation route for cases that fall outside the standard assumptions — remote work from a country where the group has no established practice, say, or an extension of an assignment beyond its original horizon.

The standard document pack

The third pillar is a standardised set of documents, triggered automatically according to the chosen path. Standardisation shortens turnaround and — more importantly — ensures that no transfer skips a critical element. A typical pack includes:

• Assignment letter — setting out duration, place of work, reporting lines, pay components and additional benefits.
• Inter-company agreement — governing the relationship between the sending company, the host company and, where relevant, another group company, including cost allocation and the scope of operational direction. Employment-law subordination remains with the sending company; day-to-day operational direction by the host is permissible but feeds the economic-employer analysis on the tax side.
• Social-security documentation — in particular the A1 certificate, issued electronically by ZUS, confirming the legislation applicable to the individual.
• Tax documentation — a certificate of residence and a position analysis based on the applicable double-tax treaty.
• Immigration documentation — work and residence permits, visas or the documents appropriate to the chosen pathway (for example an EU Blue Card, an ICT permit, or the Vander Elst route).
• Host-country filings — the prior posting notifications and contact-person designation required in many states, depending on the local regime.
• Cost estimate — covering salary, tax and contribution charges and accompanying benefits.
• Policy acknowledgement — the employee’s acceptance of the rules, including their own reporting obligations.

Keeping templates current

It is worth reviewing the templates periodically against regulatory change. References to an “original A1”, for instance, are outdated today — the certificate circulates electronically. Likewise, host-country notification requirements shift over time and should not be treated as a closed list without a current check.

The four compliance regimes behind the policy

A global mobility policy is not a legal instrument in itself, but it must be anchored in four compliance regimes. In brief, the points that the approval paths and the document pack should address are as follows.

Social security

Within the EU, the EEA and Switzerland, the principle is that a person is subject to the legislation of a single state. On a posting, keeping the individual insured in the sending state is, as a rule, possible within the limits set by the coordination rules, and the A1 certificate confirms it. In atypical situations — a prolonged assignment, for example — an exceptional agreement between the competent institutions may come into play. Cross-border remote work and simultaneous work in several states each call for a separate analysis of the applicable legislation.

Tax

The tax position of a transfer is set by the applicable double-tax treaty. The widely cited 183-day test is only one of the conditions for exempting remuneration in the state where the work is performed — and meeting it does not settle the matter. Where the entity in the state of work is, in substance, the employer within the meaning of the treaty, the economic-employer concept comes into view — an interpretive construct derived from the Commentary to the OECD Model Convention, not a statutory rule. Its application can remove the exemption even though the day threshold has not been exceeded.

A separate question is the risk that the sending company creates a permanent establishment, which — depending on the circumstances and the scope of the activities carried out abroad — may crystallise and which materially affects how taxing rights are allocated. The method for eliminating double taxation — exemption with progression or the credit method — depends on the specific treaty and is subject to change, so the policy should point to a current analysis rather than hard-code assumptions for particular states.

Labour law

A worker posted within the EU is, as a rule, entitled to the minimum terms of employment in force in the host state. After, as a rule, 12 months — extendable to 18 on the basis of a motivated notification under Directive 2018/957 — the set of applicable terms broadens toward a fuller body of host-state rules. Competent authorities are sometimes split: in France, for example, social-security matters and contribution formalities sit with URSSAF, while the monitoring of employment conditions sits with the labour inspectorate (Inspection du Travail) — and the policy should not blur those roles.

Immigration

For third-country nationals, a transfer requires the right to work and reside in the host state to be regularised. Depending on the scenario, different pathways apply — from the EU Blue Card, through the intra-corporate transfer (ICT) permit, to the Vander Elst route where services are provided in another EU state. The feasibility and duration of the immigration procedure should be checked early, because they often set the real timetable for the transfer.

Implementing and maintaining the policy

A policy works only when it has an owner, the right tools and a review cycle. In practice, a few elements are worth securing:

• Ownership. Naming the function responsible for the policy (usually group-level global mobility or HR), with a clear mandate to enforce it across the subsidiaries.
• Tools and records. A transfer register that tracks A1 statuses, extension deadlines, permit validity and the number of days present in each state.
• Review cycle. Periodic updating of the policy and templates in response to regulatory change and case law.
• Training and communication. Spreading the rules among the managers who initiate transfers — usually the first to meet a mobility need.

Implementation checklist

Before the policy goes into use, check that it contains:

• Definitions of every transfer type in scope (including business trips and cross-border remote work).
• A decision-rights matrix (RACI) with a single accountable role per stage.
• Differentiated approval paths, with the triggers that set each in motion.
• Non-skippable gates: tax, social security, immigration and cost.
• A standard document pack mapped to each path.
• An escalation route for non-standard scenarios and extensions.
• A named policy owner and a transfer register.
• A review-and-update cycle for the templates as the law changes.

Frequently asked questions

Does the policy have to be a standalone document?

There is no single right form. It can be a separate document, part of a wider HR policy, or a set of linked procedures. What matters is that the three elements — the decision-rights matrix, the approval paths and the document pack — are consistent and actually applied, not that they sit in one file.

At what scale of mobility is it worth formalising the process?

The issue is not simply the number of transfers but their repeatability and variety. Even a handful of moves a year, but to different states and in different configurations, justifies standardisation — the cost of a single tax or immigration error is often higher than the cost of putting the process in order.

Who should own the policy within the group?

In practice, most often the group-level global mobility or HR function, with a mandate covering the subsidiaries. The key, though, is to separate coordination from the substantive determinations, which stay with the tax, legal and immigration functions.

Can one policy cover both inbound and outbound transfers?

As a rule yes, provided the language stays directionally neutral — it works with the concepts of a sending company, a host company and another group company, rather than fixing the perspective of the parent alone or the subsidiary alone. That lets the same framework apply whatever the direction of the flow.

How often should the policy be updated?

A periodic review is advisable, together with ad-hoc updates after material regulatory change — in posting notifications, immigration procedures or the practice of the authorities. Document templates tend to be the most vulnerable to going out of date and deserve separate attention.

Do short business trips really need to be in scope?

In practice, yes. Under the EU rules on posting there is generally no distinction between a posting and a business trip of the kind drawn in some domestic labour laws, which is why brief cross-border travel can still trigger social-security and permanent-establishment considerations.

Support in building a global mobility policy

ATL Law advises corporate groups on the cross-border movement of employees to, from and within their Polish and EU entities — from designing the internal governance framework, through the decision-rights matrix and approval paths, to standardising assignment documentation and the analysis of social-security, tax and immigration questions.

Get in touch to discuss how to bring order to mobility across your group: office@atl-law.pl