InstituteSafety and Health Programs and TrainingIn Depth Sub Topics (Level 4)Training & DevelopmentSafety and Health Programs and TrainingUSAEnglishAnalysisFocus AreaHuman Resources
Deciding on a standard
['Safety and Health Programs and Training']

So, which if either of these should you use? It depends on what you hope to accomplish and also what your stakeholders or customers are asking for. In certain industries, it may be more common for suppliers/potential contracts to ask for one of the standards over the other.
If your sole goal is improving your internal system, you could pursue whichever you feel most comfortable with. It is advisable to talk with some organizations who have utilized these systems to find out pros and cons.
For more information on AIHA/ANSI Z10 visit www.aiha.org.
For more information on ISO 45001, visit www.iso.org/iso/home/standards/management-standards/iso45001.htm.