Since August this year a new standard was published in the Netherlands dealing with noise at the workplace. An international interest in this standard will soon result in an english version to be made available. Planning for that is early next year.
The full title is NPR 3438 Noise at the workplace – Determination of the amount of disturbance of communication and concentration. Information on this was published earlier already on this website. I think it’s worth mentioning again since creation or revision of standards is no daily news. In case you want to learn more, please check the website of the Dutch Standardisation Institute (NEN) for the dutch version or contact Ecophon for more details.