diff --git a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/fields/DynamicDefaultValueBehavior.java b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/fields/DynamicDefaultValueBehavior.java
index 0a782774..9000598b 100644
--- a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/fields/DynamicDefaultValueBehavior.java
+++ b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/fields/DynamicDefaultValueBehavior.java
@@ -28,11 +28,14 @@ import java.time.LocalDate;
 import java.util.List;
 import java.util.Set;
 import com.kingsrook.qqq.backend.core.actions.values.ValueBehaviorApplier;
+import com.kingsrook.qqq.backend.core.context.QContext;
 import com.kingsrook.qqq.backend.core.logging.QLogger;
 import com.kingsrook.qqq.backend.core.model.data.QRecord;
 import com.kingsrook.qqq.backend.core.model.metadata.QInstance;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
 import com.kingsrook.qqq.backend.core.utils.CollectionUtils;
+import com.kingsrook.qqq.backend.core.utils.ObjectUtils;
+import com.kingsrook.qqq.backend.core.utils.StringUtils;
 import static com.kingsrook.qqq.backend.core.logging.LogUtils.logPair;
 
 
@@ -45,6 +48,7 @@ public enum DynamicDefaultValueBehavior implements FieldBehavior<DynamicDefaultV
 {
    CREATE_DATE,
    MODIFY_DATE,
+   USER_ID,
    NONE;
 
    private static final QLogger LOG = QLogger.getLogger(ValueTooLongBehavior.class);
@@ -81,6 +85,7 @@ public enum DynamicDefaultValueBehavior implements FieldBehavior<DynamicDefaultV
       {
          case CREATE_DATE -> applyCreateDate(action, recordList, table, field);
          case MODIFY_DATE -> applyModifyDate(action, recordList, table, field);
+         case USER_ID -> applyUserId(action, recordList, table, field);
          default -> throw new IllegalStateException("Unexpected enum value: " + this);
       }
    }
@@ -136,6 +141,27 @@ public enum DynamicDefaultValueBehavior implements FieldBehavior<DynamicDefaultV
 
 
 
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   private void applyUserId(ValueBehaviorApplier.Action action, List<QRecord> recordList, QTableMetaData table, QFieldMetaData field)
+   {
+      String fieldName = field.getName();
+      String userId    = ObjectUtils.tryElse(() -> QContext.getQSession().getUser().getIdReference(), null);
+      if(StringUtils.hasContent(userId))
+      {
+         for(QRecord record : CollectionUtils.nonNullList(recordList))
+         {
+            if(!StringUtils.hasContent(record.getValueString(fieldName)))
+            {
+               record.setValue(field.getName(), userId);
+            }
+         }
+      }
+   }
+
+
+
    /*******************************************************************************
     **
     *******************************************************************************/