A chemical product steward asked OSHA four questions about streamlining precautionary statements on Hazard Communication (HazCom 2012) labels, including whether similar statements like "Immediately call a poison center/doctor" and "Call a poison center/doctor if you feel unwell" can be consolidated into the more protective one.
OSHA said yes. Under Appendix C, C.2.4.7 of the Hazard Communication Standard, when a chemical carries multiple hazard classifications with similar precautionary statements, the most stringent statement must be included on the label. OSHA pointed to its Inspection Procedures for the Hazard Communication Standard (HCS 2012) guidance document for additional detail.
OSHA also confirmed that similarly worded statements "may be arranged to create an order of preference, or combined to save space and improve readability." That flexibility covers combining statements across hazard classes (for example, Acute Toxicity-Oral under C.4.1 with Skin Corrosion/Irritation under C.4.4) and stating a shared instruction like "If exposed: Immediately call a poison center or doctor" once, followed by route-specific precautions. The limit: all precautionary statements must still be listed, except as allowed under Appendix C sections C.2.4.5, C.2.4.6, and C.2.4.8.