New business standards which are coming into force could affect more than 3,000 Irish companies and over 1.5 million firms globally.
The changes affect the Environmental Management Standard, ISO 14001 and Quality Management Standard ISO 9001.
They will be introduced over the next three years.
"More tenders requirements, more pre-qualification tenders, seek certification," said Fergal O'Byrne of the National Standards Authority of Ireland.
"So the suppliers on the supply chain, and you could be three or four supply out from a major retail outlet or a major organisation, who want to make sure that all their suppliers are complying with their requirements.
"So by being certified you can prove to yourself, and to your supply chain, and to your big customers, that you can deliver your service or your product in a consistent manner."