Versions of See prior versions of a law on LawServer 2023 New Hampshire Revised Statutes 277:5-a – Occupational Safety and Health Administration Certification 2021 New Hampshire Revised Statutes 277:5-a – Occupational Safety and Health Administration Certification. 2020 New Hampshire Revised Statutes 277:5-a – Occupational Safety and Health Administration Certification 2019 New Hampshire Revised Statutes 277:5-a – Occupational Safety and Health Administration Certification 2018 New Hampshire Revised Statutes 277:5-a – Occupational Safety and Health Administration Certification 2015 New Hampshire Revised Statutes 277:5-a – Occupational Safety and Health Administration Certification 2014 New Hampshire Revised Statutes 277:5-a – Occupational Safety and Health Administration Certification 2009 New Hampshire Revised Statutes 277:5-a – Occupational Safety And Health Administration Certification