diff --git a/libreplan-business/src/main/resources/org/libreplan/business/orders/entities/Orders.hbm.xml b/libreplan-business/src/main/resources/org/libreplan/business/orders/entities/Orders.hbm.xml
index e5cd1fd06..3415245de 100644
--- a/libreplan-business/src/main/resources/org/libreplan/business/orders/entities/Orders.hbm.xml
+++ b/libreplan-business/src/main/resources/org/libreplan/business/orders/entities/Orders.hbm.xml
@@ -249,7 +249,7 @@
             </type>
         </property>
 
-        <many-to-one name="orderElement" column="order_element_id" lazy="false"/>
+        <many-to-one name="orderElement" column="order_element_id" />
 
         <one-to-one name="taskSource" class="TaskSource" cascade="delete" access="field"
                     property-ref="schedulingData" />
@@ -264,8 +264,7 @@
 
         <version name="version" access="property" type="long" />
 
-        <many-to-one name="schedulingData" class="SchedulingDataForVersion" cascade="none" unique="true" access="field"
-                     lazy="false" />
+        <many-to-one name="schedulingData" class="SchedulingDataForVersion" cascade="none" unique="true" access="field" />
 
         <one-to-one name="task" class="org.libreplan.business.planner.entities.TaskElement" constrained="true"
                     cascade="delete" access="field" lazy="false"/>
diff --git a/libreplan-business/src/main/resources/org/libreplan/business/planner/entities/Tasks.hbm.xml b/libreplan-business/src/main/resources/org/libreplan/business/planner/entities/Tasks.hbm.xml
index 93d70032b..547e11f8c 100644
--- a/libreplan-business/src/main/resources/org/libreplan/business/planner/entities/Tasks.hbm.xml
+++ b/libreplan-business/src/main/resources/org/libreplan/business/planner/entities/Tasks.hbm.xml
@@ -41,7 +41,7 @@
 
         <!-- Indexed -->
         <many-to-one name="parent" class="TaskGroup" cascade="none" column="parent"
-                     index="idx_task_element_on_task_group" lazy="false" />
+                     index="idx_task_element_on_task_group" />
 
         <one-to-one name="taskSource" cascade="delete" />
 
@@ -100,7 +100,7 @@
                         class="org.libreplan.business.planner.entities.consolidations.Consolidation" cascade="all"/>
 
             <!-- Indexed on the other side -->
-            <set name="resourceAllocations" cascade="all-delete-orphan" lazy="false">
+            <set name="resourceAllocations" cascade="all-delete-orphan" >
                 <key column="task" />
                 <one-to-many class="ResourceAllocation" />
             </set>
@@ -126,7 +126,7 @@
             </list>
         </joined-subclass>
 
-        <joined-subclass name="TaskMilestone" table="task_milestone">
+        <joined-subclass name="TaskMilestone" table="task_milestone" >
             <key column="task_element_id"/>
 
             <component name="startConstraint">
diff --git a/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnMilestoneReached.java b/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnMilestoneReached.java
index 51185efc6..0d7fbc976 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnMilestoneReached.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnMilestoneReached.java
@@ -38,6 +38,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.context.annotation.Scope;
 import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.Date;
 import java.util.List;
@@ -72,7 +73,15 @@ public class SendEmailOnMilestoneReached implements IEmailNotificationJob {
     @Autowired
     EmailConnectionValidator emailConnectionValidator;
 
+    /**
+     * Transactional here is needed because without this annotation we are getting
+     * "LazyInitializationException: could not initialize proxy - no Session" error,
+     * when "item.getParent().getOrderElement().getOrder().getResponsible()" method was called.
+     * Earlier this trouble was not present because in Tasks.hbm.xml for "TaskElement" class field
+     * named "parent", which has relation "many-to-one" to "TaskGroup", lazy was set to "false".
+     */
     @Override
+    @Transactional
     public void sendEmail() {
         // Gathering data
         checkMilestoneDate();
@@ -108,11 +117,13 @@ public class SendEmailOnMilestoneReached implements IEmailNotificationJob {
         emailNotificationModel.setUpdated(new Date());
 
         String responsible = "";
-        if ( item.getParent().getOrderElement().getOrder().getResponsible() != null )
+        if ( item.getParent().getOrderElement().getOrder().getResponsible() != null ) {
             responsible = item.getParent().getOrderElement().getOrder().getResponsible();
+        }
 
         User user = null;
         try {
+            // FIXME: Code below can produce NullPointerException if "Responsible" field is not set in Project Details -> General data
             user = userDAO.findByLoginName(responsible);
         } catch (InstanceNotFoundException e) {
             e.printStackTrace();
diff --git a/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnTaskShouldFinish.java b/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnTaskShouldFinish.java
index c371f14b2..6d6b20ea7 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnTaskShouldFinish.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnTaskShouldFinish.java
@@ -20,6 +20,8 @@
 package org.libreplan.importers.notifications.realization;
 
 
+import org.joda.time.DateTime;
+import org.joda.time.DateTimeComparator;
 import org.libreplan.business.common.Configuration;
 import org.libreplan.business.email.entities.EmailNotification;
 import org.libreplan.business.email.entities.EmailTemplateEnum;
@@ -66,7 +68,15 @@ public class SendEmailOnTaskShouldFinish implements IEmailNotificationJob {
     @Autowired
     private EmailConnectionValidator emailConnectionValidator;
 
+    /**
+     * Transactional here is needed because without this annotation we are getting
+     * "LazyInitializationException: could not initialize proxy - no Session" error,
+     * when "item.getAllResourceAllocations()" method was called.
+     * Earlier this trouble was not present because in Tasks.hbm.xml for joined subclass "Task" field
+     * named "resourceAllocations", which has relation "one-to-many" to "ResourceAllocation", lazy was set to "false".
+     */
     @Override
+    @Transactional
     public void sendEmail() {
         // Gather data for email sending
         taskShouldFinish();
@@ -95,23 +105,15 @@ public class SendEmailOnTaskShouldFinish implements IEmailNotificationJob {
 
     @Transactional
     public void taskShouldFinish() {
-        // TODO resolve deprecated
         // Check if current date equals with item date
-        Date date = new Date();
-        int currentYear = date.getYear();
-        int currentMonth = date.getMonth();
-        int currentDay = date.getDay();
+        DateTime currentDate = new DateTime();
+        DateTimeComparator dateTimeComparator = DateTimeComparator.getDateOnlyInstance();
 
         List<TaskElement> tasks = taskElementDAO.getTaskElementsWithParentsWithoutMilestones();
         for (TaskElement item : tasks){
-            Date endDate = item.getEndDate();
-            int endYear = endDate.getYear();
-            int endMonth = endDate.getMonth();
-            int endDay = endDate.getDay();
+            DateTime endDate = new DateTime(item.getEndDate());
 
-            if ( currentYear == endYear &&
-                    currentMonth == endMonth &&
-                    currentDay == endDay ) {
+            if ( dateTimeComparator.compare(currentDate, endDate) == 0 ) {
                 // Get all resources for current task and send them email notification
                 sendEmailNotificationAboutTaskShouldFinish(item);
             }
diff --git a/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnTaskShouldStart.java b/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnTaskShouldStart.java
index 2cde7ac07..45a231d21 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnTaskShouldStart.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/importers/notifications/realization/SendEmailOnTaskShouldStart.java
@@ -19,6 +19,8 @@
 
 package org.libreplan.importers.notifications.realization;
 
+import org.joda.time.DateTime;
+import org.joda.time.DateTimeComparator;
 import org.libreplan.business.common.Configuration;
 
 import org.libreplan.business.email.entities.EmailNotification;
@@ -66,7 +68,15 @@ public class SendEmailOnTaskShouldStart implements IEmailNotificationJob {
     @Autowired
     private EmailConnectionValidator emailConnectionValidator;
 
+    /**
+     * Transactional here is needed because without this annotation we are getting
+     * "LazyInitializationException: could not initialize proxy - no Session" error,
+     * when "item.getAllResourceAllocations()" method was called.
+     * Earlier this trouble was not present because in Tasks.hbm.xml for joined subclass "Task" field
+     * named "resourceAllocations", which has relation "one-to-many" to "ResourceAllocation", lazy was set to "false".
+     */
     @Override
+    @Transactional
     public void sendEmail() {
         // Gather data
         taskShouldStart();
@@ -97,20 +107,14 @@ public class SendEmailOnTaskShouldStart implements IEmailNotificationJob {
     @Transactional
     public void taskShouldStart() {
         // Check if current date equals with item date
-        Date date = new Date();
-        // TODO resolve deprecated
-        int currentYear = date.getYear();
-        int currentMonth = date.getMonth();
-        int currentDay = date.getDay();
+        DateTime currentDate = new DateTime();
+        DateTimeComparator dateTimeComparator = DateTimeComparator.getDateOnlyInstance();
 
         List<TaskElement> tasks = taskElementDAO.getTaskElementsWithParentsWithoutMilestones();
         for (TaskElement item : tasks) {
-            Date startDate = item.getStartDate();
-            int startYear = startDate.getYear();
-            int startMonth = startDate.getMonth();
-            int startDay = startDate.getDay();
+            DateTime startDate = new DateTime(item.getStartDate());
 
-            if ( currentYear == startYear && currentMonth == startMonth && currentDay == startDay ) {
+            if ( dateTimeComparator.compare(currentDate, startDate) == 0) {
                 // Get all resources for current task and send them email notification
                 sendEmailNotificationAboutTaskShouldStart(item);
             }