Index: binaries/data/mods/public/simulation/templates/mixins/merc_inf.xml
===================================================================
--- binaries/data/mods/public/simulation/templates/mixins/merc_inf.xml
+++ binaries/data/mods/public/simulation/templates/mixins/merc_inf.xml
@@ -5,6 +5,9 @@
       <metal>60</metal>
     </Resources>
   </Cost>
+  <Identity>
+    <VisibleClasses datatype="tokens">-Worker</VisibleClasses>
+  </Identity>
   <Loot>
     <metal>6</metal>
   </Loot>