How to Build an HR Compliance Calendar When You're a Team of One

2026-03-01 · HR Cadence Hub Team

Running HR alone means every compliance deadline sits on your shoulders. Miss one and you risk fines, failed audits, or legal exposure. A compliance calendar is the single most important tool for staying ahead.

Why Most Solo HR Pros Fall Behind

The problem isn't ignorance — it's volume. Between open enrollment, EEO-1 filing, OSHA logs, benefits notices, and state-specific requirements, a solo HR professional can have 30+ compliance events per year. Most teams track these in spreadsheets, sticky notes, or their heads.

That approach works until it doesn't.

What Belongs on Your Compliance Calendar

A solid HR compliance calendar covers four categories:

Federal Deadlines

- EEO-1 reporting (typically due in March/April) - OSHA 300A posting (February 1 – April 30) - ACA reporting (Forms 1095-C due to employees by March 2, IRS filing by March 31) - 5500 filing for benefits plans (7 months after plan year end)

Benefits Administration

- Open enrollment planning (start 90 days before your enrollment window) - COBRA notices and qualifying event tracking - FSA/HSA contribution limit updates (announced annually in October/November)

State and Local Requirements

- State-specific posting requirements and updates - Pay transparency deadlines (varies by state) - Paid leave program changes

Recurring Internal Cycles

- Performance review periods - Compensation review cycles - Training renewal deadlines (harassment prevention, safety, etc.)

Building Your Calendar Step by Step

Step 1: Audit your obligations. List every federal, state, and internal deadline your organization must meet. Pull from DOL, EEOC, and your state labor department.

Step 2: Map deadlines to the calendar year. Place each deadline on the month it's due, then add a reminder 30–60 days before.

Step 3: Assign owners. Even if you're the only HR person, document who is responsible for each deliverable. This matters for audits and succession planning.

Step 4: Build in review checkpoints. Set quarterly reviews to catch anything that shifted or was added mid-year.

> The best compliance calendar isn't the most detailed one — it's the one you actually check every week.

Tools That Help

A purpose-built HR calendar tool beats a spreadsheet because it can:

- Pre-load federal compliance events so you don't start from zero - Send reminders before deadlines hit - Track completion status across the year - Generate audit-ready reports showing what was done and when

Key Takeaway

A compliance calendar isn't a nice-to-have — it's insurance. Build it once, maintain it weekly, and you'll never be caught off guard by a deadline again.