May or may not work for others, but I was just able to work around this issue by turning off EAR classloading isolation (Jboss 5.1.0 JDK6). After setting the following property to false, the quartz resource adapter can now load my ejb and that ejb's dependencies are properly injected. There are obviously other classloading implications, but if it's an option... in jboss/server/all/deployers/ear-deployer-jboss.beans.xml: <bean name="EARClassLoaderDeployer" class="org.jboss.deployment.EarClassLoaderDeployer"> | <property name="isolated">false</property> | </bean> View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4238049#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...