Key deadlines HR teams cannot miss

Managing a global mobility programme means juggling a continuous stream of deadlines, across immigration, tax, employment law, and internal governance, all running simultaneously and all varying depending on where your assignees are based.

Whether you are new to global mobility or simply building a more structured approach to compliance planning, this guide is for you.

For the sake of convenience, we have organised these in two parts. The first explains the four compliance categories that every mobility programme needs to manage.

The second is a quarterly reference table you can use to plan and track actions throughout the year.

Understanding what you are managing

Before diving into deadlines, it helps to understand the four categories of compliance obligation that apply to almost every international mobility programme. Each one has its own logic, its own consequences when it goes wrong, and its own rhythm across the calendar year.

Immigration and work authorisation

When a company moves an employee across a border, that employee almost always needs legal permission to work in the destination country. That permission takes different forms depending on the jurisdiction: a work visa, a work permit, a sponsored employment pass, or a combination of these. The employer typically has obligations too, not just the employee.

What it covers

• Work visas and permits: the document that gives the employee the right to work in the host country.
• Sponsor licence obligations: in many countries, the employer must be a licensed or registered sponsor before they can bring in overseas workers. This comes with its own compliance duties.
• Right-to-work checks: the employer must verify that the employee has valid permission to work before the assignment starts, and again when that permission expires.
• Dependent passes: if the employee is relocating with a spouse or family, they typically need separate visas. These have their own application timelines and renewal cycles.

Why it matters

An employee working without valid authorisation is an immediate legal risk for both the individual and the employer. In many jurisdictions this can result in fines, bans from sponsoring future workers, or criminal liability for the business. Beyond the legal risk, a delayed or lapsed visa disrupts the assignment directly, preventing the employee from working until it is resolved.

What triggers action
Immigration obligations are triggered by time. Visas and permits have fixed expiry dates. Applications take weeks or months to process. The fundamental rule is that you should never be applying for a renewal when you are already close to expiry. Depending on the country cluster, the lead time needed before expiry ranges from four weeks to six months or more.

How different countries shape immigration timelines

Countries with reciprocal movement agreements such as UK, Ireland, Australia, New Zealand and Canada, typically run points-based or sponsored permit systems with formal renewal cycles. Continental Europe adds the Posted Worker Directive, which requires employers to notify host country authorities before an assignment even starts. Asia-Pacific markets such as Singapore and Japan often require six months of lead time for renewals. Middle East residency is employer-linked, meaning the employer must act whenever an employment relationship changes.

 Tax and payroll compliance

Moving an employee across a border creates tax obligations in the host country, often without removing obligations in the home country. For the employer, this means managing withholding, reporting, and potentially running a shadow payroll. For the employee, it often means filing tax returns in more than one jurisdiction at once.

What it covers

• Employer payroll reporting: at year-end, employers must report what they paid to tax authorities. For assignees, this may be required in both home and host countries.
• Shadow payroll: where an assignee remains on home country payroll but works in a host country, a shadow payroll is often run in the host country to correctly calculate and report local tax withholding, even if no money changes hands locally.
• Personal income tax filing: assignees often need to file personal tax returns in the host country, sometimes in the home country too, depending on their residency status and how long they have been on assignment.
• Tax equalisation: many employers protect assignees from paying more tax than they would have at home. This involves hypothetical tax calculations, top-up payments, and annual settlements that must be managed carefully.
• Social security co-ordination: moving between countries can create dual social security obligations unless a bilateral agreement or certificate exempts the assignee from contributions in one country.

Why it matters

Tax compliance failures are among the most financially significant risks in global mobility. Penalties for late or incorrect filing can be substantial. For the employee, unexpected tax bills undermine trust and can create financial hardship if not managed through equalisation or support from the employer. For the organisation, unorganised tax management also poses audit risk.

What triggers action

Tax obligations are triggered by the tax year close in each relevant jurisdiction. The timing varies significantly by country. Most of Continental Europe, North America, and Asia-Pacific follow a calendar year ending 31 December. The UK and Australia both have April year-ends. Understanding which year-end applies to each assignee in your programme is the starting point for building a tax compliance calendar.

A note on shadow payroll

Shadow payroll is one of the least understood but most important mechanics in international mobility. It does not mean paying the employee twice. It means running a payroll calculation in the host country so that the correct tax is reported and withheld there, even though the actual payment may come from the home country payroll. It requires monthly reconciliation and is easy to let slip. Backlogs compound and are difficult to unwind at year-end.

Assignment lifecycle management

An international assignment does not manage itself. It moves through distinct phases, from pre-move planning through to repatriation, and each phase has compliance and operational actions attached to it. Letting any phase run without structured oversight is where most programme problems originate.

What it covers

• Pre-move compliance: before an assignee travels, the employer needs to confirm work authorisation, brief the employee on their tax position, issue an assignment letter with correct terms, and arrange any pre-departure support.
• In-assignment reviews: assignments do not stand still. Tax positions change, permit conditions evolve, family circumstances shift. Regular check-ins, typically at the six-month mark and annually, catch issues before they become problems.
• Extensions and conversions: if an assignment runs longer than planned, or if the employee transitions to local employment terms, this typically triggers fresh immigration and tax obligations.
• Repatriation: when an assignment ends, there is a structured set of actions required. Tax de-registration in the host country, visa cancellation or transfer, final expense settlement, and support for the employee returning home.

Why it matters

Unorganised assignment transitions, particularly extensions agreed informally without updated paperwork, and repatriations that are not properly closed out, create long-tail compliance problems. An employee who returns home but remains technically registered for tax in the host country, or whose visa was never cancelled, creates ongoing obligations that are costly to resolve.

What triggers action

Assignment lifecycle actions are triggered by the calendar of moves your organisation has planned. The key is maintaining an accurate, current view of every active assignment: when it started, when it is due to end, and whether any changes have occurred since the original assignment letter was issued.

 Programme governance

Programme governance is the category that holds everything else together. It covers the internal management of your mobility programme: policies, costs, suppliers, and audit. It is the least externally regulated of the four categories but it is what determines whether the other three categories are managed well or badly.

What it covers

• Policy review: your assignment policy sets out what benefits and support employees receive when they relocate. It needs to reflect current market benchmarks, current legislation, and your organisation’s talent strategy.
• Cost management: international assignments are expensive. Tracking costs against budget, reviewing cost of living allowances using current index data, and analysing spend by assignment type are all part of running a financially disciplined programme.
• Supplier management: most organisations use external partners for immigration advice, tax support, household goods, and destination services. Those relationships need to be monitored and periodically reviewed.
• Internal audit: regular audits of assignment records, right-to-work documentation, and sponsor licence compliance are good practice and in some jurisdictions a legal requirement.

Why it matters

A mobility programme without governance drifts and can add additional costs. It can also raise questions during internal audits. Governance is what makes a programme sustainable as it scales.

What triggers action

Programme governance does not have statutory deadlines in the way that tax or immigration does. But it has natural moments in the year: the close of the prior year prompts a policy review, the mid-year mark prompts a cost review, and Q4 is the window for planning and budgeting the next year. The discipline is scheduling these reviews and holding to them.

The 2026 compliance calendar

Keeping the above four categories in consideration, we have shared a table below that maps the key actions for the year. It is designed to be used as a planning reference.

A note on regions: This guide groups markets into five clusters with broadly similar compliance rhythms:

• Countries with reciprocal movement agreementsUK, Ireland, Australia, New Zealand, Canada),
• North America (US, Canada),
• Latin America
• Continental Europe,
• Asia-Pacific (Singapore, Hong Kong, Japan, India, Australia)
• Middle East and Africa.

Important: The deadlines and frameworks in this table are general planning guidelines, not jurisdiction-specific legal advice. Requirements change frequently and vary by individual assignment circumstances. Always confirm obligations with qualified immigration, tax, and legal advisers in each relevant country.

How MovePlus supports compliance management

The four categories above, running simultaneously across multiple countries and dozens of assignees, represent a significant management challenge. The volume of data involved, expiry dates, filing windows, policy versions, cost records, is difficult to hold reliably in manual systems.

MovePlus acts as a strategic partner to organisations, helping transform employee mobility from a series of logistical tasks into a structured, visible, and employee-focused talent strategy. The MOVEPLUS™ platform centralises key dates, documentation, and compliance records so HR and mobility teams have a single source of truth for their programme, regardless of how many countries or assignment types are in scope.

Through the platform, teams can:

• Monitor visa renewals, document expiry dates and relocation milestones across all regions in one dashboard.
• Track key assignment details such as start, move, and assignment end dates that highlight upcoming renewal or filing windows.
• Maintain secure document storage and a clear record of each assignment for all sponsored and mobile workers.
• Centralise mobility information, documents and decisions, and supports coordination with specialist legal, tax, and immigration partners as requirements change by location and move type.

Planning for 2026 and beyond

The most effective global mobility programmes treat compliance as a strategic discipline, not an administrative one. A structured calendar, applied consistently across your assignment population and supported by a centralised platform, means your team spends less time firefighting and more time on the work that drives programme value: improving the assignee experience, managing costs intelligently, and aligning mobility with your organisation’s talent strategy.

Disclaimer:

This document sets out typical annual global-mobility compliance activities and common regional timing patterns. Statutory deadlines, immigration lead times, social-security coverage, payroll obligations, and registration requirements must be validated country-by-country.