diff --git a/lib/taskana-core/src/main/java/pro/taskana/TaskMonitorService.java b/lib/taskana-core/src/main/java/pro/taskana/TaskMonitorService.java
index e665b54f3..9d037b131 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/TaskMonitorService.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/TaskMonitorService.java
@@ -8,6 +8,7 @@ import pro.taskana.exceptions.NotAuthorizedException;
 import pro.taskana.impl.SelectedItem;
 import pro.taskana.impl.report.impl.CategoryReport;
 import pro.taskana.impl.report.impl.ClassificationReport;
+import pro.taskana.impl.report.impl.CombinedClassificationFilter;
 import pro.taskana.impl.report.impl.CustomFieldValueReport;
 import pro.taskana.impl.report.impl.DetailedClassificationReport;
 import pro.taskana.impl.report.impl.TaskStatusReport;
@@ -43,6 +44,11 @@ public interface TaskMonitorService {
      * @param customFieldValues
      *            a list of custom field values to filter by the values of the custom field. To omit this filter, use
      *            null for this parameter
+     * @param combinedClassificationFilter
+     *            a list of pairs of a classificationId for a task and a classificationId for the corresponding
+     *            attachment that is used to filter by the classification of the attachment. To filter by the
+     *            classification of the task, the classificationId of the attachment should be null. To omit this
+     *            filter, use null for this parameter
      * @return the report
      * @throws InvalidArgumentException
      *             thrown if DaysToWorkingDaysConverter is initialized with null
@@ -50,7 +56,8 @@ public interface TaskMonitorService {
      *             if the current user is not member of role MONITOR
      */
     WorkbasketLevelReport getWorkbasketLevelReport(List<String> workbasketIds, List<TaskState> states,
-        List<String> categories, List<String> domains, CustomField customField, List<String> customFieldValues)
+        List<String> categories, List<String> domains, CustomField customField, List<String> customFieldValues,
+        List<CombinedClassificationFilter> combinedClassificationFilter)
         throws InvalidArgumentException, NotAuthorizedException;
 
     /**
@@ -77,6 +84,11 @@ public interface TaskMonitorService {
      * @param customFieldValues
      *            a list of custom field values to filter by the values of the custom field. To omit this filter, use
      *            null for this parameter
+     * @param combinedClassificationFilter
+     *            a list of pairs of a classificationId for a task and a classificationId for the corresponding
+     *            attachment that is used to filter by the classification of the attachment. To filter by the
+     *            classification of the task, the classificationId of the attachment should be null. To omit this
+     *            filter, use null for this parameter
      * @param columnHeaders
      *            a list of columnHeaders that specify the subdivision into different cluster of due dates. Days in past
      *            are represented as negative values and days in the future are represented as positive values. To avoid
@@ -92,16 +104,17 @@ public interface TaskMonitorService {
      */
     WorkbasketLevelReport getWorkbasketLevelReport(List<String> workbasketIds, List<TaskState> states,
         List<String> categories, List<String> domains, CustomField customField, List<String> customFieldValues,
-        List<TimeIntervalColumnHeader> columnHeaders) throws InvalidArgumentException, NotAuthorizedException;
+        List<CombinedClassificationFilter> combinedClassificationFilter, List<TimeIntervalColumnHeader> columnHeaders)
+        throws InvalidArgumentException, NotAuthorizedException;
 
     /**
-     * Returns a {@link WorkbasketLevelReport} grouped by workbaskets. For each workbasket the report contains the total
-     * number of tasks and the number of tasks of the respective cluster that are specified by the
-     * {@link TimeIntervalColumnHeader}s. It can be specified whether the age of the tasks is counted in days or in
-     * working days. Furthermore the report contains a sum line that contains the total numbers of the different
-     * clusters and the total number of all tasks. The tasks of the report are filtered by workbaskets, states,
-     * categories, domains and values of a custom field. If no filter is required, the respective parameter should be
-     * null. Tasks with Timestamp DUE = null are not considered.
+     * Returns a {@link WorkbasketLevelReport} for specific classifications grouped by workbaskets. For each workbasket
+     * the report contains the total number of tasks and the number of tasks of the respective cluster that are
+     * specified by the {@link TimeIntervalColumnHeader}s. It can be specified whether the age of the tasks is counted
+     * in days or in working days. Furthermore the report contains a sum line that contains the total numbers of the
+     * different clusters and the total number of all tasks. The tasks of the report are filtered by workbaskets,
+     * states, categories, domains and values of a custom field. If no filter is required, the respective parameter
+     * should be null. Tasks with Timestamp DUE = null are not considered.
      *
      * @param workbasketIds
      *            a list of workbasket ids objects to filter by workbaskets. To omit this filter, use null for this
@@ -118,6 +131,11 @@ public interface TaskMonitorService {
      * @param customFieldValues
      *            a list of custom field values to filter by the values of the custom field. To omit this filter, use
      *            null for this parameter
+     * @param combinedClassificationFilter
+     *            a list of pairs of a classificationId for a task and a classificationId for the corresponding
+     *            attachment that is used to filter by the classification of the attachment. To filter by the
+     *            classification of the task, the classificationId of the attachment should be null. To omit this
+     *            filter, use null for this parameter
      * @param columnHeaders
      *            a list of columnHeaders that specify the subdivision into different cluster of due dates. Days in past
      *            are represented as negative values and days in the future are represented as positive values. To avoid
@@ -136,8 +154,8 @@ public interface TaskMonitorService {
      */
     WorkbasketLevelReport getWorkbasketLevelReport(List<String> workbasketIds, List<TaskState> states,
         List<String> categories, List<String> domains, CustomField customField, List<String> customFieldValues,
-        List<TimeIntervalColumnHeader> columnHeaders, boolean inWorkingDays)
-        throws InvalidArgumentException, NotAuthorizedException;
+        List<CombinedClassificationFilter> combinedClassificationFilter, List<TimeIntervalColumnHeader> columnHeaders,
+        boolean inWorkingDays) throws InvalidArgumentException, NotAuthorizedException;
 
     /**
      * Returns a {@link CategoryReport} grouped by categories. The report contains the total numbers of tasks of the
diff --git a/lib/taskana-core/src/main/java/pro/taskana/impl/TaskMonitorServiceImpl.java b/lib/taskana-core/src/main/java/pro/taskana/impl/TaskMonitorServiceImpl.java
index d48241162..cf4f0e776 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/impl/TaskMonitorServiceImpl.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/impl/TaskMonitorServiceImpl.java
@@ -16,6 +16,7 @@ import pro.taskana.exceptions.InvalidArgumentException;
 import pro.taskana.exceptions.NotAuthorizedException;
 import pro.taskana.impl.report.impl.CategoryReport;
 import pro.taskana.impl.report.impl.ClassificationReport;
+import pro.taskana.impl.report.impl.CombinedClassificationFilter;
 import pro.taskana.impl.report.impl.CustomFieldValueReport;
 import pro.taskana.impl.report.impl.DaysToWorkingDaysPreProcessor;
 import pro.taskana.impl.report.impl.DetailedClassificationReport;
@@ -45,31 +46,34 @@ public class TaskMonitorServiceImpl implements TaskMonitorService {
 
     @Override
     public WorkbasketLevelReport getWorkbasketLevelReport(List<String> workbasketIds, List<TaskState> states,
-        List<String> categories, List<String> domains, CustomField customField, List<String> customFieldValues)
+        List<String> categories, List<String> domains, CustomField customField, List<String> customFieldValues,
+        List<CombinedClassificationFilter> combinedClassificationFilter)
         throws InvalidArgumentException, NotAuthorizedException {
         return getWorkbasketLevelReport(workbasketIds, states, categories, domains, customField, customFieldValues,
-            Collections.emptyList(), false);
+            combinedClassificationFilter, Collections.emptyList(), false);
     }
 
     @Override
     public WorkbasketLevelReport getWorkbasketLevelReport(List<String> workbasketIds, List<TaskState> states,
         List<String> categories, List<String> domains, CustomField customField, List<String> customFieldValues,
-        List<TimeIntervalColumnHeader> columnHeaders) throws InvalidArgumentException, NotAuthorizedException {
+        List<CombinedClassificationFilter> combinedClassificationFilter, List<TimeIntervalColumnHeader> columnHeaders)
+        throws InvalidArgumentException, NotAuthorizedException {
         return getWorkbasketLevelReport(workbasketIds, states, categories, domains, customField, customFieldValues,
-            columnHeaders, true);
+            combinedClassificationFilter, columnHeaders, true);
     }
 
     @Override
     public WorkbasketLevelReport getWorkbasketLevelReport(List<String> workbasketIds, List<TaskState> states,
         List<String> categories, List<String> domains, CustomField customField, List<String> customFieldValues,
-        List<TimeIntervalColumnHeader> columnHeaders, boolean inWorkingDays)
-        throws InvalidArgumentException, NotAuthorizedException {
+        List<CombinedClassificationFilter> combinedClassificationFilter, List<TimeIntervalColumnHeader> columnHeaders,
+        boolean inWorkingDays) throws InvalidArgumentException, NotAuthorizedException {
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug("entry to getWorkbasketLevelReport(workbasketIds = {}, states = {}, categories = {}, "
-                + "domains = {}, customField = {}, customFieldValues = {}, columnHeaders = {}, "
-                + "inWorkingDays = {})", LoggerUtils.listToString(workbasketIds), LoggerUtils.listToString(states),
-                LoggerUtils.listToString(categories), LoggerUtils.listToString(domains), customField,
-                LoggerUtils.listToString(customFieldValues), LoggerUtils.listToString(columnHeaders),
+                + "domains = {}, customField = {}, customFieldValues = {}, combinedClassificationFilter = {}, "
+                + "columnHeaders = {}, inWorkingDays = {})", LoggerUtils.listToString(workbasketIds),
+                LoggerUtils.listToString(states), LoggerUtils.listToString(categories),
+                LoggerUtils.listToString(domains), customField, LoggerUtils.listToString(customFieldValues),
+                LoggerUtils.listToString(combinedClassificationFilter), LoggerUtils.listToString(columnHeaders),
                 inWorkingDays);
         }
         taskanaEngineImpl.checkRoleMembership(TaskanaRole.MONITOR);
@@ -80,7 +84,8 @@ public class TaskMonitorServiceImpl implements TaskMonitorService {
 
             WorkbasketLevelReport report = new WorkbasketLevelReport(columnHeaders);
             List<MonitorQueryItem> monitorQueryItems = taskMonitorMapper.getTaskCountOfWorkbaskets(
-                workbasketIds, states, categories, domains, customField, customFieldValues);
+                workbasketIds, states, categories, domains, customField, customFieldValues,
+                combinedClassificationFilter);
 
             report.addItems(monitorQueryItems, new DaysToWorkingDaysPreProcessor<>(columnHeaders, inWorkingDays));
 
diff --git a/lib/taskana-core/src/main/java/pro/taskana/impl/report/impl/CombinedClassificationFilter.java b/lib/taskana-core/src/main/java/pro/taskana/impl/report/impl/CombinedClassificationFilter.java
new file mode 100644
index 000000000..a406e5b9e
--- /dev/null
+++ b/lib/taskana-core/src/main/java/pro/taskana/impl/report/impl/CombinedClassificationFilter.java
@@ -0,0 +1,43 @@
+package pro.taskana.impl.report.impl;
+
+/**
+ * The CombinedClassificationFilter is a pair of a classificationId for a task and a classificationId for the
+ * corresponding attachment that is used to filter the {@link WorkbasketLevelReport} by the classification of the
+ * attachment. To filter by the classification of the task, the classificationId of the attachment should be null.
+ */
+public class CombinedClassificationFilter {
+
+    private String taskClassificationId;
+    private String attachmentClassificationId;
+
+    public CombinedClassificationFilter(String taskClassificationId) {
+        this.taskClassificationId = taskClassificationId;
+    }
+
+    public CombinedClassificationFilter(String taskClassificationId, String attachmentClassificationId) {
+        this.taskClassificationId = taskClassificationId;
+        this.attachmentClassificationId = attachmentClassificationId;
+    }
+
+    public String getTaskClassificationId() {
+        return this.taskClassificationId;
+    }
+
+    public void setTaskClassificationId(String taskClassificationId) {
+        this.taskClassificationId = taskClassificationId;
+    }
+
+    public String getAttachmentClassificationId() {
+        return this.attachmentClassificationId;
+    }
+
+    public void setAttachmentClassificationId(String attachmentClassificationId) {
+        this.attachmentClassificationId = attachmentClassificationId;
+    }
+
+    @Override
+    public String toString() {
+        return "(" + this.taskClassificationId + "," + this.attachmentClassificationId + ")";
+    }
+
+}
diff --git a/lib/taskana-core/src/main/java/pro/taskana/mappings/TaskMonitorMapper.java b/lib/taskana-core/src/main/java/pro/taskana/mappings/TaskMonitorMapper.java
index 102850e91..899777e68 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/mappings/TaskMonitorMapper.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/mappings/TaskMonitorMapper.java
@@ -11,6 +11,7 @@ import org.apache.ibatis.annotations.Select;
 import pro.taskana.CustomField;
 import pro.taskana.TaskState;
 import pro.taskana.impl.SelectedItem;
+import pro.taskana.impl.report.impl.CombinedClassificationFilter;
 import pro.taskana.impl.report.impl.DetailedMonitorQueryItem;
 import pro.taskana.impl.report.impl.MonitorQueryItem;
 import pro.taskana.impl.report.impl.TaskQueryItem;
@@ -21,31 +22,39 @@ import pro.taskana.impl.report.impl.TaskQueryItem;
 public interface TaskMonitorMapper {
 
     @Select("<script>"
-        + "<if test=\"_databaseId == 'db2'\">SELECT WORKBASKET_KEY, (DAYS(DUE) - DAYS(CURRENT_TIMESTAMP)) as AGE_IN_DAYS, COUNT(*) as NUMBER_OF_TASKS</if> "
-        + "<if test=\"_databaseId == 'h2'\">SELECT WORKBASKET_KEY, DATEDIFF('DAY', CURRENT_TIMESTAMP, DUE) as AGE_IN_DAYS, COUNT(*) as NUMBER_OF_TASKS</if> "
-        + "<if test=\"_databaseId == 'postgres'\">SELECT WORKBASKET_KEY, DATE_PART('DAY', DUE - CURRENT_TIMESTAMP) as AGE_IN_DAYS, COUNT(*) as NUMBER_OF_TASKS</if> "
-        + "FROM TASKANA.TASK "
+        + "<if test=\"_databaseId == 'db2'\">SELECT T.WORKBASKET_KEY, (DAYS(T.DUE) - DAYS(CURRENT_TIMESTAMP)) as AGE_IN_DAYS, COUNT(*) as NUMBER_OF_TASKS</if> "
+        + "<if test=\"_databaseId == 'h2'\">SELECT T.WORKBASKET_KEY, DATEDIFF('DAY', CURRENT_TIMESTAMP, T.DUE) as AGE_IN_DAYS, COUNT(*) as NUMBER_OF_TASKS</if> "
+        + "<if test=\"_databaseId == 'postgres'\">SELECT T.WORKBASKET_KEY, DATE_PART('DAY', T.DUE - CURRENT_TIMESTAMP) as AGE_IN_DAYS, COUNT(*) as NUMBER_OF_TASKS</if> "
+        + "FROM TASKANA.TASK AS T LEFT JOIN TASKANA.ATTACHMENT AS A ON T.ID = A.TASK_ID "
         + "<where>"
         + "<if test=\"workbasketIds != null\">"
-        + "WORKBASKET_ID IN (<foreach collection='workbasketIds' item='workbasketId' separator=','>#{workbasketId}</foreach>) "
+        + "T.WORKBASKET_ID IN (<foreach collection='workbasketIds' item='workbasketId' separator=','>#{workbasketId}</foreach>) "
         + "</if>"
         + "<if test=\"states != null\">"
-        + "AND STATE IN (<foreach collection='states' item='state' separator=','>#{state}</foreach>) "
+        + "AND T.STATE IN (<foreach collection='states' item='state' separator=','>#{state}</foreach>) "
         + "</if>"
         + "<if test=\"categories != null\">"
-        + "AND CLASSIFICATION_CATEGORY IN (<foreach collection='categories' item='category' separator=','>#{category}</foreach>) "
+        + "AND T.CLASSIFICATION_CATEGORY IN (<foreach collection='categories' item='category' separator=','>#{category}</foreach>) "
         + "</if>"
         + "<if test=\"domains != null\">"
-        + "AND DOMAIN IN (<foreach collection='domains' item='domain' separator=','>#{domain}</foreach>) "
+        + "AND T.DOMAIN IN (<foreach collection='domains' item='domain' separator=','>#{domain}</foreach>) "
         + "</if>"
         + "<if test=\"customField != null and customFieldValues != null\">"
         + "AND ${customField}  IN (<foreach collection='customFieldValues' item='customFieldValue' separator=','>#{customFieldValue}</foreach>) "
         + "</if>"
-        + "AND DUE IS NOT NULL "
+        + "<if test=\"combinedClassificationFilter != null\">"
+        + "AND <foreach collection='combinedClassificationFilter' item='item' separator='OR'> "
+        + "T.CLASSIFICATION_ID = #{item.taskClassificationId}"
+        + "<if test=\"item.attachmentClassificationId != null\">"
+        + "AND A.CLASSIFICATION_ID = #{item.attachmentClassificationId}"
+        + "</if>"
+        + "</foreach>"
+        + "</if>"
+        + "AND T.DUE IS NOT NULL "
         + "</where>"
-        + "<if test=\"_databaseId == 'db2'\">GROUP BY WORKBASKET_KEY, (DAYS(DUE) - DAYS(CURRENT_TIMESTAMP))</if> "
-        + "<if test=\"_databaseId == 'h2'\">GROUP BY WORKBASKET_KEY, DATEDIFF('DAY', CURRENT_TIMESTAMP, DUE)</if> "
-        + "<if test=\"_databaseId == 'postgres'\">GROUP BY WORKBASKET_KEY, DATE_PART('DAY', DUE - CURRENT_TIMESTAMP)</if> "
+        + "<if test=\"_databaseId == 'db2'\">GROUP BY T.WORKBASKET_KEY, (DAYS(T.DUE) - DAYS(CURRENT_TIMESTAMP))</if> "
+        + "<if test=\"_databaseId == 'h2'\">GROUP BY T.WORKBASKET_KEY, DATEDIFF('DAY', CURRENT_TIMESTAMP, T.DUE)</if> "
+        + "<if test=\"_databaseId == 'postgres'\">GROUP BY T.WORKBASKET_KEY, DATE_PART('DAY', T.DUE - CURRENT_TIMESTAMP)</if> "
         + "<if test=\"_databaseId == 'db2'\">with UR </if> "
         + "</script>")
     @Results({
@@ -57,7 +66,8 @@ public interface TaskMonitorMapper {
         @Param("categories") List<String> categories,
         @Param("domains") List<String> domains,
         @Param("customField") CustomField customField,
-        @Param("customFieldValues") List<String> customFieldValues);
+        @Param("customFieldValues") List<String> customFieldValues,
+        @Param("combinedClassificationFilter") List<CombinedClassificationFilter> combinedClassificationFilter);
 
     @Select("<script>"
         + "<if test=\"_databaseId == 'db2'\">SELECT CLASSIFICATION_CATEGORY, (DAYS(DUE) - DAYS(CURRENT_TIMESTAMP)) as AGE_IN_DAYS, COUNT(*) as NUMBER_OF_TASKS</if> "
diff --git a/lib/taskana-core/src/test/java/acceptance/monitoring/ProvideWorkbasketLevelReportAccTest.java b/lib/taskana-core/src/test/java/acceptance/monitoring/ProvideWorkbasketLevelReportAccTest.java
index 0ccf0dd50..67e47148c 100644
--- a/lib/taskana-core/src/test/java/acceptance/monitoring/ProvideWorkbasketLevelReportAccTest.java
+++ b/lib/taskana-core/src/test/java/acceptance/monitoring/ProvideWorkbasketLevelReportAccTest.java
@@ -31,6 +31,7 @@ import pro.taskana.exceptions.InvalidArgumentException;
 import pro.taskana.exceptions.NotAuthorizedException;
 import pro.taskana.impl.configuration.DBCleaner;
 import pro.taskana.impl.configuration.TaskanaEngineConfigurationTest;
+import pro.taskana.impl.report.impl.CombinedClassificationFilter;
 import pro.taskana.impl.report.impl.TimeIntervalColumnHeader;
 import pro.taskana.impl.report.impl.WorkbasketLevelReport;
 import pro.taskana.security.JAASRunner;
@@ -70,7 +71,8 @@ public class ProvideWorkbasketLevelReportAccTest {
         throws InvalidArgumentException, NotAuthorizedException {
         TaskMonitorService taskMonitorService = taskanaEngine.getTaskMonitorService();
 
-        taskMonitorService.getWorkbasketLevelReport(null, null, null, null, null, null);
+        taskMonitorService.getWorkbasketLevelReport(null, null, null, null, null, null,
+            null);
     }
 
     @WithAccessId(
@@ -80,7 +82,8 @@ public class ProvideWorkbasketLevelReportAccTest {
         throws InvalidArgumentException, NotAuthorizedException {
         TaskMonitorService taskMonitorService = taskanaEngine.getTaskMonitorService();
 
-        WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, null, null, null, null, null);
+        WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, null, null, null, null, null,
+            null);
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(reportToString(report));
@@ -106,7 +109,7 @@ public class ProvideWorkbasketLevelReportAccTest {
         List<TimeIntervalColumnHeader> columnHeaders = getListOfColumnHeaders();
 
         WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, null, null, null, null, null,
-            columnHeaders);
+            null, columnHeaders);
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(reportToString(report, columnHeaders));
@@ -137,7 +140,7 @@ public class ProvideWorkbasketLevelReportAccTest {
         List<TimeIntervalColumnHeader> columnHeaders = getShortListOfColumnHeaders();
 
         WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, null, null, null, null, null,
-            columnHeaders);
+            null, columnHeaders);
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(reportToString(report, columnHeaders));
@@ -166,7 +169,7 @@ public class ProvideWorkbasketLevelReportAccTest {
         List<TimeIntervalColumnHeader> columnHeaders = getShortListOfColumnHeaders();
 
         WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, null, null, null, null, null,
-            columnHeaders, false);
+            null, columnHeaders, false);
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(reportToString(report, columnHeaders));
@@ -196,8 +199,7 @@ public class ProvideWorkbasketLevelReportAccTest {
         List<TimeIntervalColumnHeader> columnHeaders = getShortListOfColumnHeaders();
 
         WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(workbasketIds, null, null, null,
-            null, null,
-            columnHeaders);
+            null, null, null, columnHeaders);
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(reportToString(report, columnHeaders));
@@ -222,7 +224,7 @@ public class ProvideWorkbasketLevelReportAccTest {
         List<TimeIntervalColumnHeader> columnHeaders = getShortListOfColumnHeaders();
 
         WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, states, null, null, null, null,
-            columnHeaders);
+            null, columnHeaders);
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(reportToString(report, columnHeaders));
@@ -252,8 +254,7 @@ public class ProvideWorkbasketLevelReportAccTest {
         List<TimeIntervalColumnHeader> columnHeaders = getShortListOfColumnHeaders();
 
         WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, null, categories, null, null,
-            null,
-            columnHeaders);
+            null, null, columnHeaders);
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(reportToString(report, columnHeaders));
@@ -284,8 +285,7 @@ public class ProvideWorkbasketLevelReportAccTest {
         List<TimeIntervalColumnHeader> columnHeaders = getShortListOfColumnHeaders();
 
         WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, null, null, domains, null,
-            null,
-            columnHeaders);
+            null, null, columnHeaders);
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(reportToString(report, columnHeaders));
@@ -316,7 +316,7 @@ public class ProvideWorkbasketLevelReportAccTest {
         List<TimeIntervalColumnHeader> columnHeaders = getShortListOfColumnHeaders();
 
         WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, null, null, null,
-            customField, customFieldValues, columnHeaders);
+            customField, customFieldValues, null, columnHeaders);
 
         if (LOGGER.isDebugEnabled()) {
             LOGGER.debug(reportToString(report, columnHeaders));
@@ -335,6 +335,47 @@ public class ProvideWorkbasketLevelReportAccTest {
         assertArrayEquals(new int[] {2, 1, 0, 0, 1}, row3);
     }
 
+    @WithAccessId(
+        userName = "monitor")
+    @Test
+    public void testEachItemOfWorkbasketLevelReportForSelectedClassifications()
+        throws InvalidArgumentException, NotAuthorizedException {
+        TaskMonitorService taskMonitorService = taskanaEngine.getTaskMonitorService();
+
+        List<TimeIntervalColumnHeader> columnHeaders = getShortListOfColumnHeaders();
+        List<CombinedClassificationFilter> combinedClassificationFilter = new ArrayList<>();
+        combinedClassificationFilter
+            .add(new CombinedClassificationFilter("CLI:000000000000000000000000000000000003",
+                "CLI:000000000000000000000000000000000008"));
+        combinedClassificationFilter
+            .add(new CombinedClassificationFilter("CLI:000000000000000000000000000000000003",
+                "CLI:000000000000000000000000000000000009"));
+        combinedClassificationFilter
+            .add(new CombinedClassificationFilter("CLI:000000000000000000000000000000000002",
+                "CLI:000000000000000000000000000000000007"));
+        combinedClassificationFilter
+            .add(new CombinedClassificationFilter("CLI:000000000000000000000000000000000005"));
+
+        WorkbasketLevelReport report = taskMonitorService.getWorkbasketLevelReport(null, null, null, null, null,
+            null, combinedClassificationFilter, columnHeaders, true);
+
+        if (LOGGER.isDebugEnabled()) {
+            LOGGER.debug(reportToString(report, columnHeaders));
+        }
+
+        assertNotNull(report);
+        assertEquals(3, report.rowSize());
+
+        int[] row1 = report.getRow("USER_1_1").getCells();
+        assertArrayEquals(new int[] {3, 3, 0, 1, 1}, row1);
+
+        int[] row2 = report.getRow("USER_1_2").getCells();
+        assertArrayEquals(new int[] {0, 2, 1, 6, 0}, row2);
+
+        int[] row3 = report.getRow("USER_1_3").getCells();
+        assertArrayEquals(new int[] {1, 0, 0, 0, 3}, row3);
+    }
+
     private List<TimeIntervalColumnHeader> getListOfColumnHeaders() {
         List<TimeIntervalColumnHeader> columnHeaders = new ArrayList<>();
         columnHeaders.add(new TimeIntervalColumnHeader(Integer.MIN_VALUE, -11));
diff --git a/lib/taskana-core/src/test/java/pro/taskana/impl/TaskMonitorServiceImplTest.java b/lib/taskana-core/src/test/java/pro/taskana/impl/TaskMonitorServiceImplTest.java
index d2d535002..e819c83a5 100644
--- a/lib/taskana-core/src/test/java/pro/taskana/impl/TaskMonitorServiceImplTest.java
+++ b/lib/taskana-core/src/test/java/pro/taskana/impl/TaskMonitorServiceImplTest.java
@@ -35,6 +35,7 @@ import pro.taskana.exceptions.InvalidArgumentException;
 import pro.taskana.exceptions.NotAuthorizedException;
 import pro.taskana.impl.report.impl.CategoryReport;
 import pro.taskana.impl.report.impl.ClassificationReport;
+import pro.taskana.impl.report.impl.CombinedClassificationFilter;
 import pro.taskana.impl.report.impl.CustomFieldValueReport;
 import pro.taskana.impl.report.impl.DetailedClassificationReport;
 import pro.taskana.impl.report.impl.DetailedMonitorQueryItem;
@@ -82,6 +83,9 @@ public class TaskMonitorServiceImplTest {
         List<String> domains = Collections.singletonList("DOMAIN_A");
         CustomField customField = CustomField.CUSTOM_1;
         List<String> customFieldValues = Collections.singletonList("Geschaeftsstelle A");
+        List<CombinedClassificationFilter> combinedClassificationFilter = Arrays
+            .asList(new CombinedClassificationFilter("CLI:000000000000000000000000000000000003",
+                "CLI:000000000000000000000000000000000008"));
 
         List<MonitorQueryItem> expectedResult = new ArrayList<>();
         MonitorQueryItem monitorQueryItem = new MonitorQueryItem();
@@ -89,17 +93,17 @@ public class TaskMonitorServiceImplTest {
         monitorQueryItem.setNumberOfTasks(1);
         expectedResult.add(monitorQueryItem);
         doReturn(expectedResult).when(taskMonitorMapperMock).getTaskCountOfWorkbaskets(workbasketIds, states,
-            categories, domains, customField, customFieldValues);
+            categories, domains, customField, customFieldValues, combinedClassificationFilter);
 
         WorkbasketLevelReport actualResult = cut.getWorkbasketLevelReport(workbasketIds, states, categories, domains,
-            customField, customFieldValues);
+            customField, customFieldValues, combinedClassificationFilter);
 
         verify(taskanaEngineImplMock, times(1)).openConnection();
         verify(taskanaEngineImplMock, times(1)).checkRoleMembership(any());
         verify(taskanaEngineImplMock, times(2)).getConfiguration();
         verify(taskanaEngineConfiguration, times(1)).isGermanPublicHolidaysEnabled();
         verify(taskanaEngineConfiguration, times(1)).getCustomHolidays();
-        verify(taskMonitorMapperMock, times(1)).getTaskCountOfWorkbaskets(any(), any(), any(),
+        verify(taskMonitorMapperMock, times(1)).getTaskCountOfWorkbaskets(any(), any(), any(), any(),
             any(), any(), any());
         verify(taskanaEngineImplMock, times(1)).returnConnection();
         verifyNoMoreInteractions(taskanaEngineImplMock, taskMonitorMapperMock, taskanaEngineConfiguration);
@@ -119,6 +123,9 @@ public class TaskMonitorServiceImplTest {
         List<String> domains = Collections.singletonList("DOMAIN_A");
         CustomField customField = CustomField.CUSTOM_1;
         List<String> customFieldValues = Collections.singletonList("Geschaeftsstelle A");
+        List<CombinedClassificationFilter> combinedClassificationFilter = Arrays
+            .asList(new CombinedClassificationFilter("CLI:000000000000000000000000000000000003",
+                "CLI:000000000000000000000000000000000008"));
         List<TimeIntervalColumnHeader> reportLineItemDefinitions = Collections.singletonList(
             new TimeIntervalColumnHeader(0, 0));
 
@@ -129,17 +136,18 @@ public class TaskMonitorServiceImplTest {
         monitorQueryItem.setNumberOfTasks(1);
         expectedResult.add(monitorQueryItem);
         doReturn(expectedResult).when(taskMonitorMapperMock).getTaskCountOfWorkbaskets(workbasketIds, states,
-            categories, domains, customField, customFieldValues);
+            categories, domains, customField, customFieldValues, combinedClassificationFilter);
 
         WorkbasketLevelReport actualResult = cut.getWorkbasketLevelReport(workbasketIds, states, categories, domains,
-            customField, customFieldValues, reportLineItemDefinitions);
+            customField, customFieldValues, combinedClassificationFilter, reportLineItemDefinitions);
 
         verify(taskanaEngineImplMock, times(1)).openConnection();
         verify(taskanaEngineImplMock, times(1)).checkRoleMembership(any());
         verify(taskanaEngineImplMock, times(2)).getConfiguration();
         verify(taskanaEngineConfiguration, times(1)).isGermanPublicHolidaysEnabled();
         verify(taskanaEngineConfiguration, times(1)).getCustomHolidays();
-        verify(taskMonitorMapperMock, times(1)).getTaskCountOfWorkbaskets(any(), any(), any(), any(), any(), any());
+        verify(taskMonitorMapperMock, times(1)).getTaskCountOfWorkbaskets(any(), any(), any(), any(), any(), any(),
+            any());
         verify(taskanaEngineImplMock, times(1)).returnConnection();
         verifyNoMoreInteractions(taskanaEngineImplMock, taskMonitorMapperMock, taskanaEngineConfiguration);