IN THIS GUIDE · Clarifying an employer letter with vague duties
Start with the TN eligibility and application overview
Find the unanswered question in each duty
Read each responsibility and ask what the employee will actually do, for whom and to produce what result. Phrases such as support operations or lead initiatives may describe work at many levels and in many professions. Ask the supervisor for concrete explanations before selecting terminology. A useful revision makes the real activity understandable. It should not simply add the name of the proposed TN profession to an otherwise empty sentence.
Ask the people who know the work
Human resources can confirm compensation and employment dates, while the hiring manager may need to describe methods, deliverables and professional judgment. Arrange one factual review across those sources so the letter does not contradict the offer or job description. A hypothetical employer might explain that an employee prepares a specific technical analysis rather than merely supports projects. That added detail is useful only if it accurately reflects the work the employee is being hired to perform.
Retain material duties even when they complicate the case
Do not remove substantial administrative, sales or other responsibilities solely because they weaken the proposed category. Describe the genuine role and assess whether its overall professional character supports TN. If duties are divided across functions, ask the employer to explain that division accurately rather than invent precise percentages. A narrow category label does not resolve a broad job. The appropriate outcome of review may be that the role needs another immigration analysis.
Reconcile the final letter with its supporting records
Check the employer name, job identity, compensation arrangements, intended duration and credentials against the underlying records. Ask the signatory to confirm the factual content, including any technical explanation supplied by a manager. Maintain one final version and identify later substantive changes for renewed review. This is an editorial control, not an official filing rule. A clear letter should make evidence easier to follow while preserving the employer’s actual commitments and the applicant’s actual qualifications.
Ask for proportions instead of adjectives
Vagueness usually survives redrafting because the request was for better wording rather than for different information. Ask instead how the working week divides. Request an approximate percentage of time against each duty, and a note of who else in the organization performs similar work. Numbers are harder to write carelessly than adjectives, and the exercise forces someone to think about the actual job. It also exposes the pattern that matters most here, which is a role described in professional terms but occupied largely by general business support. Hypothetical example: a technical publications writer whose letter describes authoring and standards work may turn out to spend most of the week on coordination and scheduling, and the proportion is what reveals it. Where a manager cannot estimate the split, that inability is itself information about how well the position has been defined.
Check that the person signing can stand behind the words
A letter is only as reliable as the knowledge of the person who signs it, and support letters are frequently signed by someone who has never observed the role. Establish who is proposing to sign, what their relationship to the position is, and whether they could answer questions about the duties without referring to anyone else. Where the signatory is a human resources officer working from a template and the person who understands the work is a technical manager, either the manager should sign or the manager's account should be what the letter reflects. Ask the signatory to read the final version and confirm each statement is accurate to their own knowledge. A signature obtained without that step creates a document nobody can defend, and the applicant is the person who will be asked about it.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.