Here are some CSA-approved work boots for men:

1. Irish Setter Wingshooter ST – Waterproof leather, non-metallic safety toe, slip-resistant.

2. ROCKROOSTER Beaufort – Composite toe, water-resistant, slip & oil-resistant.

3. Caterpillar Excavator Superlite – Carbon composite toe, waterproof, insulated for cold weather.

4. Red Wing Apex – Aluminum safety toe, waterproof, slip-resistant.

5. Timberland PRO BOA Magnitude – Composite toe, BOA® Fit System, CSA-certified for safety.

Let me know if you need recommendations based on specific work conditions!