Assignment Letter
What is Assignment Letter?
A formal document outlining the terms and conditions of an international assignment, including duration, compensation, benefits, housing, and repatriation provisions.
An assignment letter serves as the contractual foundation of an international assignment. It typically specifies the assignment start and end dates, the host and home locations, compensation details (including base salary, allowances, and bonuses), benefits continuation or modifications, housing arrangements, tax equalization provisions, and the terms of repatriation.
For employers, the assignment letter is a critical compliance tool. It establishes the legal framework under which the employee will operate abroad and provides documentation required by immigration authorities, tax agencies, and payroll teams. For employees, it offers clarity on what to expect during their time abroad.
Best practices for assignment letters include using clear, jurisdiction-appropriate language, referencing applicable mobility policies, and ensuring the letter is reviewed by both legal counsel and tax advisors before issuance.
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Frequently Asked Questions
What does a typical assignment letter include?
A typical assignment letter includes assignment duration, host country location, reporting structure, base compensation, mobility allowances such as housing and cost of living adjustments, tax equalization terms, hypothetical tax treatment, immigration support, repatriation guarantees, and conditions for early termination. Most letters also reference the underlying mobility policy that governs the assignment in detail.
Why does the assignment letter matter?
The assignment letter matters because it creates a binding agreement between the employer and assignee on every material term of the assignment. A clear letter prevents disputes over compensation, tax treatment, and return rights. A vague or incomplete letter exposes both parties to legal and financial risk when the assignment ends or circumstances change unexpectedly.
Who is responsible for issuing the assignment letter?
The assignment letter is typically drafted by the global mobility team using a template tied to the relevant policy tier. HR business partners, Legal, and the assignee's manager review the letter before it is issued. The assignee signs the letter before any immigration, relocation, or payroll setup begins. Modern mobility platforms automate letter generation from assignment data.
Related Terms
International Assignment
A formal arrangement in which an employee is sent to work in a country other than their home country for a defined period, typically ranging from a few months to several years.
Relocation Package
A bundle of benefits and allowances provided by an employer to support an employee moving to a new location, which may include moving expenses, temporary housing, travel, and settling-in support.
Repatriation
The process of returning an employee to their home country following the completion of an international assignment, including career transition support, reverse culture adjustment, and logistical assistance.