The older organisation was the Confederation of Employees (Swedish: De Anställdas Centralorganisation or DACO) founded in 1931 by seven private sector white collar unions representing 20,000 workers.

[3]: 392–3  After World War II membership in the affiliated unions grew rapidly to more than half a million by 1965.

TCO Certified is a sustainability certification for IT products in offices and data centers worldwide.

Certified products must meet comprehensive environmental and social criteria throughout the life cycle.

Products must meet criteria for energy efficiency, ergonomic design and limited hazardous substance content.