Awareness is the first step to change habits:

• Use canteen space to explain through posters your sustainable actions
• Provide key figures
• Explain the environmental impact of meat production and hence why its consumption should be reduced
• Make recycling easy in your office canteen / restaurant (make sure that you provide general bins and recycling bins with adequate signage so that employees can properly dispose of plastic, aluminum and paper, along with their general trash)

If you have an on-site composter, don't forget a specific bin for organic waste.