I am afraid in JBoss EAP 6.x the WorkManager is intended to be used only with a JCA resource adapter. As a result, the resource adapter itself can retrieve the WorkManager object from BootstrapContext#getWorkManager().
You are right about the IronJacamar tool. Actually this tool can help you get started writing a JCA resource adapter.
To be specific, IronJacamar provides a WorkManager resource adapter in its test suite. You can check the following URL for more info: http://www.ironjacamar.org/doc/api/spec/1.7/javax/resource/spi/work/WorkManager.html
Thanks for your reply. It really helped. I found the teat suite you mentioned. I was wondering if you have also used the IronJacamar Eclipse plugin? I went ahead and downloaded the IronJacamar implementation, and tried to install the IronJacamar Eclipse plugin. I followed the instructions by copying the ironjacamar-eclipse.jar to the %ECLIPSE_HOME%\plugins directory. but when I open Eclipse and go to the Window/Preferences page and click on IronJacamar, the following error occurs:
Unable to create the selected preference page.
org/jboss/jca/eclipse/preferences/IronJacamarPreferencePage : Unsupported major.minor version 51.0.
My Java version is 1.7.0_55 and the compiler compliance level is set to 1.7. I would think this should be sufficient for the IronJacamar plugin.