What do CSA and ASTM stand for in work boots?

CSA stands for the Canadian Standards Association, while ASTM stands for the American Society for Testing and Materials. The requirements for both countries are similar, however all CSA product features a puncture-resistant plate.

Can I wear a CSA work boot on my jobsite in the US?
CSA products exceed ASTM requirements, however you should always check with your supervisor to ensure this is acceptable.