Most compliance calendars ask one question: does your current headcount clear a threshold. That question has an obvious answer, and it is usually the wrong one, because almost none of these obligations attach on the day the raw headcount crosses the number in their name. Title VII coverage, the ACA's employer mandate and the WARN Act's own definition each run on a different counting method, and two obligations that share the identical threshold number can attach on two different dates months apart.
Corvid Analytics, a fictional 110-person remote-first HR-data analytics company, crossed 50 employees on 3 September 2024. That single number produced three different outcomes. Its FMLA employer coverage attached 21 January 2025, once a 20-calendar-week test completed. Its Applicable Large Employer status under the ACA attached 485 days later, on 1 January 2026, once its 2025 monthly average reached 55. Its FMLA employee eligibility never attached at all, because that test runs per worksite within 75 miles, and Corvid's largest single site, its Denver office, holds only 24 people.
The same gap shows up at both ends. Corvid's headcount crossed 15 on 12 June 2023, and Title VII and ADA coverage attached 140 days later, once the 20th qualifying week completed on 30 October 2023; an audit found the gap 77 days after that. At 100 employees, EEO-1 Component 1 tests one pay period inside an employer-selected fourth quarter, not the crossing date, while the WARN Act's own definition excludes part-time staff and stays dormant until a layoff is actually planned.
HR Compliance Calendar Template