A mentor can describe firsthand training and work, including the employee’s particular contribution. Separate that account from assumptions about what all graduates know.
Use verifiable examples
Identify the project, the problem and the employee’s role. Do not attribute the mentor’s own expertise to the transferee merely because they worked together.
A mentor declaration should identify the writer’s role and firsthand basis, the training dates, the process taught, observed assignments, and differences between the beneficiary’s capability and routine knowledge. Support it with contemporaneous manuals, version histories, work orders, assessment records, or project correspondence. Avoid conclusory praise such as “indispensable” without verifiable facts. The statutory knowledge can concern company products or services, research and equipment, techniques or management, and other organizational interests and their application internationally. Alternatively, the employee may possess knowledge at an advanced level of that organization’s processes and procedures. Separately prove a qualifying relationship as parent, branch, subsidiary, or affiliate, plus the generally required year of continuous full-time foreign work within the relevant preceding three-year period. During the stay, organizational business must continue in America and another country, apart from the initial new-office exception.
Hypothetical example: A Russell seed-sorting systems analyst learned an internal optical-grading workflow from the company’s senior engineer and later corrected classification errors. The mentor should describe the diagnostic sequence, which configurations the analyst mastered, and specific fixes the mentor observed. Dated test results and revision notes can corroborate that account. The company should then show how the U.S. affiliate will use this knowledge, rather than claiming that mentorship alone makes the analyst eligible.