When the safety officer started going on about it I had to immediately address a few questions. I do honestly believe this is a very nice topic to cover as part of this blog's mission, and a lot more people will learn from it because I don't think most of us do actually know what is going on here. If you do, ..., well, great!!!!!!
It appears that in order to have a global harmonised system of classification and labelling of chemicals (GHS) the United Nations met in 2007 and agreed on a system to be recognised worldwide. The full length of the document can be found in  and the pdfs browsed in more depth that the one made use of hereby. In order to account for the potential adverse effects the different chemicals present to the public, several nations and organisations developed laws, rules and practices that used to differ to some extent from border to border. These differences were considered, at some point, enough to generate issues and problems, and thus, required a more standardised system that could be understood by the global users. Four main reasons were presented to substantiate the need for a more broadly accepted system:
1) to enhance the protection of the environment and human health,
2) to create a internationally recognised platform of communication,
3) to reduce the need for testing and evaluation of chemicals,
4) to make international trade a lot easier.
The official document is lengthy and dense, it does cover a vast list of topics from CLP to pictograms, but a quick overview can answer short questions that immediately arise. Like, for example:
What is CLP?
CLP or CLP Regulation stands for Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures, amending and repealing directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006 (REACH). It came into force on 20 January 2009 and applies across the European Union.
CLP or CLP Regulation is the new European Regulation on Classification, Labelling and Packaging of chemical substances and mixtures. The legislation introduces throughout the EU a new system for classifying and labelling chemicals, based on the United Nations’ Globally Harmonised System (UN GHS). 
What is CLP about?
CLP is about the hazards of chemical substances and mixtures and how to inform others about them. It is the task of industry to establish what are the hazards of substances and mixtures before these are placed on the market, and to classify them in line with the identified hazards. In case a substance or a mixture is hazardous, it has to be labelled so that workers and consumers know about its effects before they handle it. Note that “mixture” means the same as the term “preparation” which has been used so far. 
What are the symbols to be used in the GHS?
What else is new?
Pictograms (formerly known as labels) that are prescribed by the GHS but not the UN Recommendations on the Transport of Dangerous Goods, Model Regulations, shoud display a black symbol on a white background framed in red, and be large enough to be widely visible.
What abou the old MSDS and the fashionable orange in black labels. Are they gone?
To some extent, yes! But they are being replaced by improved SDS (Safety Data Sheets) and new pictograms ready for the harmonised system.With compulsory 16 categories to be filled in, no information will escape the new SDS.
There is so much to read and know that the best thing to do is just visit reference 1 whenever possible. This post was just to raise eyebrows on a piece of information that I personally consider of extreme importance for anyone working in a lab. If after both initial references were studied you still feel the need to know a little more you may visit reference 3. Number three will provide you with an online course (that I don't know if it's good or not, sorry) but it seems to hold a lot of essential information put in a way that will be more pleasant that reading passages and passages of written text. But to make your life easier and also the understanding of it all, I found this amusing video that might help you get set and ready to go. Hope it helps you in any way and see you very soon in a harmonised for the world The Toxicologist Today!
 - UNECE, United Nations Economic Comission for Europe, http://live.unece.org/trans/danger/publi/ghs/ghs_rev02/02files_e.html, Last visited on the 27th of September 2011, last updated on January 2008.
 - ECHA, European Chemicals Agency, http://echa.europa.eu/clp/clp_regulation_en.asp, last visited
 - Globally Harmonised System, Compliance Products and Training Material, http://www.ghssafety.com/?gclid=CISHyaLPvasCFbEntAodcwzzsg, last visited on the 27th of September 2011, last update unknown.