diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/daos/IResourceAllocationDAO.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/daos/IResourceAllocationDAO.java
index b7f68b4ad..d8e4adafd 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/daos/IResourceAllocationDAO.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/daos/IResourceAllocationDAO.java
@@ -31,6 +31,7 @@ import org.navalplanner.business.common.daos.IGenericDAO;
 import org.navalplanner.business.planner.entities.GenericResourceAllocation;
 import org.navalplanner.business.planner.entities.ResourceAllocation;
 import org.navalplanner.business.planner.entities.SpecificDayAssignment;
+import org.navalplanner.business.planner.entities.SpecificResourceAllocation;
 import org.navalplanner.business.planner.entities.Task;
 import org.navalplanner.business.resources.entities.Criterion;
 import org.navalplanner.business.resources.entities.Resource;
@@ -74,4 +75,33 @@ public interface IResourceAllocationDAO extends
             List<Criterion> criterions, Date intervalFilterStartDate,
             Date intervalFilterEndDate);
 
+    /**
+     * <p>
+     * It searches for the {@link SpecificResourceAllocation specific
+     * allocations} that have an assigned resource such that interferes with the
+     * provided criterion. This means that the assigned resource for the
+     * specific allocation satisfies the provided criterion in part or all the
+     * specific allocation.
+     * </p>
+     * <p>
+     * It only returns the allocations for which their tasks overlap
+     * intervalFilterStartDate and intervalFilterEndDate. If any of these
+     * interval parameters is null it's considered that the interval is open
+     * ended. So if you provide both interval filter values as null, all
+     * allocations satisfying the first requirement are returned.
+     * </p>
+     *
+     * @param criterion
+     *            must be not <code>null</code>
+     * @param intervalFilterStartDate
+     *            It can be <code>null</code>
+     * @param intervalFilterEndDate
+     *            It can be <code>null</code>
+     * @return the list of {@link SpecificResourceAllocation specific
+     *         allocations} found
+     */
+    List<SpecificResourceAllocation> findSpecificAllocationsRelatedTo(
+            Criterion criterion, Date intervalFilterStartDate,
+            Date intervalFilterEndDate);
+
 }
\ No newline at end of file
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/daos/ResourceAllocationDAO.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/daos/ResourceAllocationDAO.java
index ae99a6df7..ebc7aa2f5 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/daos/ResourceAllocationDAO.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/daos/ResourceAllocationDAO.java
@@ -310,4 +310,61 @@ public class ResourceAllocationDAO extends
                         Restrictions.between("day", start, end))).list();
     }
 
+    @Override
+    public List<SpecificResourceAllocation> findSpecificAllocationsRelatedTo(
+            Criterion criterion, Date intervalFilterStartDate,
+            Date intervalFilterEndDate) {
+        String queryString = "select distinct s from SpecificResourceAllocation s "
+                + "join s.resource r "
+                + "join r.criterionSatisfactions satisfaction "
+                + "join satisfaction.criterion c";
+        if (intervalFilterStartDate != null || intervalFilterEndDate != null) {
+            queryString += " inner join s.task t";
+        }
+        queryString += " where c = :criterion";
+        if (intervalFilterEndDate != null) {
+            queryString += " and t.startDate.date <= :intervalFilterEndDate";
+        }
+        if (intervalFilterStartDate != null) {
+            queryString += " and t.endDate.date >= :intervalFilterStartDate";
+        }
+
+        Query query = getSession().createQuery(queryString);
+        query.setParameter("criterion", criterion);
+
+        if (intervalFilterStartDate != null) {
+            query.setParameter("intervalFilterStartDate",
+                    asLocalDate(intervalFilterStartDate));
+        }
+        if (intervalFilterEndDate != null) {
+            query.setParameter("intervalFilterEndDate",
+                    asLocalDate(intervalFilterEndDate));
+        }
+
+        @SuppressWarnings("unchecked")
+        List<SpecificResourceAllocation> result = query.list();
+        return onlyAllocationsWithActiveCriterion(criterion, result,
+                asLocalDate(intervalFilterStartDate),
+                asLocalDate(intervalFilterEndDate));
+    }
+
+    private static LocalDate asLocalDate(Date date) {
+        if (date == null) {
+            return null;
+        }
+        return LocalDate.fromDateFields(date);
+    }
+
+    private List<SpecificResourceAllocation> onlyAllocationsWithActiveCriterion(
+            Criterion criterion, List<SpecificResourceAllocation> allocations,
+            LocalDate startInclusive, LocalDate endExclusive) {
+        List<SpecificResourceAllocation> result = new ArrayList<SpecificResourceAllocation>();
+        for (SpecificResourceAllocation each : allocations) {
+            if (each.interferesWith(criterion, startInclusive, endExclusive)) {
+                result.add(each);
+            }
+        }
+        return result;
+    }
+
 }
\ No newline at end of file
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/SpecificResourceAllocation.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/SpecificResourceAllocation.java
index db5693eb0..5386d1c9a 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/SpecificResourceAllocation.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/SpecificResourceAllocation.java
@@ -388,4 +388,11 @@ public class SpecificResourceAllocation extends
         return availability.getValidPeriods();
     }
 
+    public boolean interferesWith(ICriterion criterion,
+            LocalDate startInclusive, LocalDate endExclusive) {
+        List<Interval> intervalsRelatedWith = getIntervalsRelatedWith(
+                criterion, startInclusive, endExclusive);
+        return !intervalsRelatedWith.isEmpty();
+    }
+
 }