An employer letter setting out her title, dates, duties and reporting line; an organizational chart showing her subordinates; payroll or tax records confirming continuous employment; and examples of decisions she controlled, such as hiring records or budget approvals.
Show authority with records, not adjectives
The strongest managerial evidence is the ordinary paperwork of running a department. For the year-abroad requirement, the file should contain a letter from the Canadian company confirming Dana's continuous employment and title, backed by T4 slips or payroll summaries covering the period. For managerial capacity, an organizational chart with names and titles is essential, showing the supervisors and professionals who report to her and, in turn, who reports to them.
Add documents that demonstrate her authority in practice: signed offers of employment for staff she hired, a performance review she conducted, a capital request she approved, minutes of a management meeting she chaired. Job descriptions matter, but a description written for the petition and unsupported by records reads as advocacy. If part of her role was managing an essential function rather than people — for example the whole quality-assurance program — describe the function's importance and her discretion over it, since function management can qualify.
Hypothetical example: Selma manages a Canadian aerial-mapping company that has acquired a small U.S. data-processing unit. Her first review should produce a dated organizational chart for each company, a table of her direct reports and records showing who makes hiring, budget and performance decisions.
Payroll and corporate ledgers settle the qualifying-employer question; ordinary management records settle capacity. She must also show an uninterrupted qualifying year outside the country during the three years preceding filing. L-1A time is limited to seven years, so prior L use belongs in the chronology.