From April 6, it has become law for all businesses, charities, and public sector organisations to sort their waste for recycling.
The changes will increase recycling and reduce the amount of waste sent for incineration and to landfill.
The Workplace Recycling Regulations will require all business, public and third sector workplaces to separate key recyclable materials in the way that householders already do across most of Wales.
The following materials will need to be separated for collection, and collected separately: Food; Paper and card; Glass; Metal, plastic and cartons; Unsold textiles; Unsold small waste electrical and electronic equipment.
Putting the recycling in different bins will improve its quality, making it more likely the materials can be used by Welsh businesses instead of being exported.
There will also be a ban on: Sending food waste to sewer (any amount); Separately collected waste going to incineration and landfill; All wood waste going to landfill.
Welsh Government Cabinet Secretary for Climate Change, Huw Irranca-Davies said: “Wales is already the best in the UK for domestic recycling and third best in the world.
“This is an important step towards reaching zero waste, reducing our carbon emissions and tackling the climate emergency.