Are occupational exposure limits becoming more alike within the European Union? 
The occupational exposure limits (OELs) established by seven different national regulatory agencies of EU member states are compared with those of the European Commission (EC).  The comparison concerned: (1) what chemicals have been selected, (2) the average level of exposure limits for all chemicals, and (3) the similarity between the OELs of different EU member states and the OELs recommended by the European Commission.  The average level of the exposure limits has declined during the past 10 years in four of the five countries in our study for which historical data were available to us.  Poland has not changed its level noticeably and Germany has increased it.  Since the first list of indicative OELs was established by the EC, a few of the EU exposure limits have been lowered.  The similarity index indicates that the exposure limits of EU member states are converging towards the European Commission's recommended OELs.  Still, the average level of OELs differs between organizations--the Estonian OELs are on average 35% higher than the Polish OELs.