diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/GenericDayAssignmentsContainer.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/GenericDayAssignmentsContainer.java
index 8ca74f69a..cc17bb6cf 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/GenericDayAssignmentsContainer.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/GenericDayAssignmentsContainer.java
@@ -54,6 +54,11 @@ public class GenericDayAssignmentsContainer extends BaseEntity implements
 
     private Set<GenericDayAssignment> dayAssignments = new HashSet<GenericDayAssignment>();
 
+    /**
+     * It can be <code>null</code>
+     */
+    private IntraDayDate intraDayStart;
+
     /**
      * It can be <code>null</code>
      */
@@ -106,6 +111,14 @@ public class GenericDayAssignmentsContainer extends BaseEntity implements
         return GenericDayAssignment.copy(this, assignments);
     }
 
+    public IntraDayDate getIntraDayStart() {
+        return intraDayStart;
+    }
+
+    public void setIntraDayStart(IntraDayDate intraDayStart) {
+        this.intraDayStart = intraDayStart;
+    }
+
     public IntraDayDate getIntraDayEnd() {
         return intraDayEnd;
     }
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/IDayAssignmentsContainer.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/IDayAssignmentsContainer.java
index bd68f25d0..4076cec36 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/IDayAssignmentsContainer.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/IDayAssignmentsContainer.java
@@ -43,6 +43,10 @@ public interface IDayAssignmentsContainer<T extends DayAssignment> {
 
     void resetTo(Collection<T> assignments);
 
+    IntraDayDate getIntraDayStart();
+
+    void setIntraDayStart(IntraDayDate intraDayStart);
+
     IntraDayDate getIntraDayEnd();
 
     void setIntraDayEnd(IntraDayDate intraDayEnd);
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/SpecificDayAssignmentsContainer.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/SpecificDayAssignmentsContainer.java
index f2812b5a1..e668ce529 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/SpecificDayAssignmentsContainer.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/SpecificDayAssignmentsContainer.java
@@ -54,6 +54,11 @@ public class SpecificDayAssignmentsContainer extends BaseEntity implements
 
     private Set<SpecificDayAssignment> dayAssignments = new HashSet<SpecificDayAssignment>();
 
+    /**
+     * It can be <code>null</code>
+     */
+    private IntraDayDate intraDayStart;
+
     /**
      * It can be <code>null</code>
      */
@@ -111,6 +116,16 @@ public class SpecificDayAssignmentsContainer extends BaseEntity implements
         return SpecificDayAssignment.copy(this, assignments);
     }
 
+    @Override
+    public IntraDayDate getIntraDayStart() {
+        return intraDayStart;
+    }
+
+    @Override
+    public void setIntraDayStart(IntraDayDate intraDayStart) {
+        this.intraDayStart = intraDayStart;
+    }
+
     @Override
     public IntraDayDate getIntraDayEnd() {
         return intraDayEnd;
diff --git a/navalplanner-business/src/main/resources/org/navalplanner/business/planner/entities/ResourceAllocations.hbm.xml b/navalplanner-business/src/main/resources/org/navalplanner/business/planner/entities/ResourceAllocations.hbm.xml
index 584a31c2c..2f0474ef0 100644
--- a/navalplanner-business/src/main/resources/org/navalplanner/business/planner/entities/ResourceAllocations.hbm.xml
+++ b/navalplanner-business/src/main/resources/org/navalplanner/business/planner/entities/ResourceAllocations.hbm.xml
@@ -88,6 +88,13 @@
         <many-to-one name="resourceAllocation" column="RESOURCE_ALLOCATION_ID"/>
         <many-to-one name="scenario" />
 
+        <component name="intraDayStart" class="org.navalplanner.business.workingday.IntraDayDate">
+            <property name="date" column="startDate"
+                type="org.joda.time.contrib.hibernate.PersistentLocalDate" />
+            <property name="effortDuration" column="durationStartInFirstDay"
+                type="org.navalplanner.business.workingday.hibernate.EffortDurationType"/>
+        </component>
+
         <component name="intraDayEnd" class="org.navalplanner.business.workingday.IntraDayDate">
             <property name="date" column="endDate"
                 type="org.joda.time.contrib.hibernate.PersistentLocalDate" />
@@ -116,6 +123,13 @@
         <many-to-one name="resourceAllocation" column="RESOURCE_ALLOCATION_ID"/>
         <many-to-one name="scenario" />
 
+        <component name="intraDayStart" class="org.navalplanner.business.workingday.IntraDayDate">
+            <property name="date" column="startDate"
+                type="org.joda.time.contrib.hibernate.PersistentLocalDate" />
+            <property name="effortDuration" column="durationStartInFirstDay"
+                type="org.navalplanner.business.workingday.hibernate.EffortDurationType"/>
+        </component>
+
         <component name="intraDayEnd" class="org.navalplanner.business.workingday.IntraDayDate">
             <property name="date" column="endDate"
                 type="org.joda.time.contrib.hibernate.PersistentLocalDate" />