OSHA Compliance Deadline Calendar 2026

Never miss an OSHA deadline. Interactive 2026 calendar with 300A posting, electronic filing, Tier II, HazCom audit dates, and heat illness prevention.

Instantly generate audit-proof OSHA documentation and calculate 2026 compliance risks without login. Protect your job site from $16,550+ citations and ensure GHS Rev 7 readiness with this free, construction-grade safety utility.

What is this tool?

The OSHA Deadline Calendar 2026 is an interactive compliance timeline that consolidates every critical OSHA date—300A posting, electronic ITA filing, Tier II chemical inventory, heat illness NEP season, and annual HazCom audit windows—into a single, filterable reference tool for safety managers and compliance officers.

OSHA requirement

Multiple OSHA standards impose calendar-driven obligations: 29 CFR 1904.32 (300A posting Feb 1–Apr 30), 29 CFR 1904.41 (electronic submission by March 2), EPCRA §312 (Tier II by March 1), 29 CFR 1910.1200(h) (annual HazCom training), and the National Emphasis Program for heat-related hazards. Missing any deadline can trigger citations of $16,550+ per violation.

How to use it

Browse the full-year timeline or filter by month and severity (Critical, Important, Advisory). Each entry shows the regulation reference, deadline description, and category. Use it as your compliance calendar—set reminders for upcoming deadlines and pair with the HazCom Audit Checklist to prepare documentation in advance.

How to Use the OSHA Compliance Calendar

1. Browse the timeline: View all 14 OSHA compliance deadlines organized chronologically through 2026.
2. Filter by category: Filter deadlines by type: recordkeeping, reporting, training, posting, or filing.
3. Check severity levels: Identify critical vs important vs advisory deadlines to prioritize your compliance efforts.
4. Set reminders: Use the deadline dates to set calendar reminders and pair with the HazCom Audit Checklist for preparation.

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