diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/IMonthlyTimesheetModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/IMonthlyTimesheetModel.java
index 2cebb15ad..46b887c4f 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/IMonthlyTimesheetModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/IMonthlyTimesheetModel.java
@@ -77,7 +77,9 @@ public interface IMonthlyTimesheetModel {
 
     /**
      * Sets the {@link EffortDuration} in the current monthly timesheet for the
-     * specified <code>orderElement</code> and <code>date</code>.
+     * specified <code>orderElement</code> and <code>date</code>.<br />
+     *
+     * Marks the current monthly timesheet as modified.
      */
     void setEffortDuration(OrderElement orderElement, LocalDate date,
             EffortDuration effortDuration);
@@ -128,4 +130,22 @@ public interface IMonthlyTimesheetModel {
      */
     Order getOrder(OrderElement orderElement);
 
-}
\ No newline at end of file
+    /**
+     * Returns <code>true</code> if current monthly timesheet has been modified
+     * by the user.
+     */
+    boolean isModified();
+
+    /**
+     * Checks if current monthly timesheet is the first month, that means the
+     * first activation period of the resource.
+     */
+    boolean isFirstMonth();
+
+    /**
+     * Checks if current monthly timesheet is the last month, that means the
+     * next month of current date.
+     */
+    boolean isLastMonth();
+
+}
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/MonthlyTimesheetController.java b/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/MonthlyTimesheetController.java
index 194642b2b..57824423f 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/MonthlyTimesheetController.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/MonthlyTimesheetController.java
@@ -25,12 +25,16 @@ import static org.libreplan.web.planner.tabs.MultipleTabsPlannerController.BREAD
 import java.util.ArrayList;
 import java.util.List;
 
+import javax.annotation.Resource;
+
 import org.apache.commons.lang.StringUtils;
 import org.joda.time.LocalDate;
 import org.libreplan.business.orders.entities.OrderElement;
 import org.libreplan.business.workingday.EffortDuration;
 import org.libreplan.web.common.Util;
 import org.libreplan.web.common.components.bandboxsearch.BandboxSearch;
+import org.libreplan.web.common.entrypoints.EntryPointsHandler;
+import org.libreplan.web.common.entrypoints.EntryPointsHandler.ICapture;
 import org.libreplan.web.common.entrypoints.IURLHandlerRegistry;
 import org.libreplan.web.users.services.CustomTargetUrlResolver;
 import org.springframework.util.Assert;
@@ -38,6 +42,7 @@ import org.zkoss.zk.ui.Component;
 import org.zkoss.zk.ui.Executions;
 import org.zkoss.zk.ui.WrongValueException;
 import org.zkoss.zk.ui.util.GenericForwardComposer;
+import org.zkoss.zul.Button;
 import org.zkoss.zul.Cell;
 import org.zkoss.zul.Column;
 import org.zkoss.zul.Columns;
@@ -69,6 +74,13 @@ public class MonthlyTimesheetController extends GenericForwardComposer
 
     private BandboxSearch orderElementBandboxSearch;
 
+    private Button previousMonth;
+
+    private Button nextMonth;
+
+    @Resource
+    private IMonthlyTimesheetController monthlyTimesheetController;
+
     private RowRenderer rowRenderer = new RowRenderer() {
 
         private LocalDate first;
@@ -412,6 +424,43 @@ public class MonthlyTimesheetController extends GenericForwardComposer
         }
     }
 
+    public boolean isFirstMonth() {
+        return monthlyTimesheetModel.isFirstMonth();
+    }
+
+    public boolean isLastMonth() {
+        return monthlyTimesheetModel.isLastMonth();
+    }
+
+    public void previousMonth() {
+        if (monthlyTimesheetModel.isModified()) {
+            throw new WrongValueException(
+                    previousMonth,
+                    _("There are unsaved changes in the current monthly timesheet, please save before moving"));
+        }
+        sendToMonthlyTimesheet(monthlyTimesheetModel.getDate().minusMonths(1));
+    }
+
+    public void nextMonth() {
+        if (monthlyTimesheetModel.isModified()) {
+            throw new WrongValueException(
+                    nextMonth,
+                    _("There are unsaved changes in the current monthly timesheet, please save before moving"));
+        }
+
+        sendToMonthlyTimesheet(monthlyTimesheetModel.getDate().plusMonths(1));
+    }
+
+    private void sendToMonthlyTimesheet(final LocalDate date) {
+        String capturePath = EntryPointsHandler.capturePath(new ICapture() {
+            @Override
+            public void capture() {
+                monthlyTimesheetController.goToCreateOrEditForm(date);
+            }
+        });
+        Executions.getCurrent().sendRedirect(capturePath);
+    }
+
 }
 
 /**
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/MonthlyTimesheetModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/MonthlyTimesheetModel.java
index 0b6dd1712..bf8a28927 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/MonthlyTimesheetModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/users/dashboard/MonthlyTimesheetModel.java
@@ -101,6 +101,8 @@ public class MonthlyTimesheetModel implements IMonthlyTimesheetModel {
     @Autowired
     private IOrderDAO orderDAO;
 
+    private boolean modified;
+
     @Override
     @Transactional(readOnly = true)
     public void initCreateOrEdit(LocalDate date) {
@@ -117,6 +119,8 @@ public class MonthlyTimesheetModel implements IMonthlyTimesheetModel {
 
         initWorkReport();
         initOrderElements();
+
+        modified = false;
     }
 
     private void initDates() {
@@ -266,6 +270,7 @@ public class MonthlyTimesheetModel implements IMonthlyTimesheetModel {
             workReport.addWorkReportLine(workReportLine);
         }
         workReportLine.setEffort(effortDuration);
+        modified = true;
     }
 
     private WorkReportLine createWorkReportLine(OrderElement orderElement,
@@ -298,6 +303,7 @@ public class MonthlyTimesheetModel implements IMonthlyTimesheetModel {
                             .getWorkReportLines());
             workReportDAO.save(workReport);
         }
+        modified = false;
     }
 
     @Override
@@ -306,6 +312,7 @@ public class MonthlyTimesheetModel implements IMonthlyTimesheetModel {
         date = null;
         orderElements = null;
         workReport = null;
+        modified = false;
     }
 
     @Override
@@ -353,4 +360,22 @@ public class MonthlyTimesheetModel implements IMonthlyTimesheetModel {
         return orderDAO.loadOrderAvoidingProxyFor(orderElement);
     }
 
+    @Override
+    public boolean isModified() {
+        return modified;
+    }
+
+    @Override
+    public boolean isFirstMonth() {
+        LocalDate activationDate = getWorker().getCalendar()
+                .getFistCalendarAvailability().getStartDate();
+        return firstDay.equals(activationDate.dayOfMonth().withMinimumValue());
+    }
+
+    @Override
+    public boolean isLastMonth() {
+        return firstDay.equals(new LocalDate().plusMonths(1).dayOfMonth()
+                .withMinimumValue());
+    }
+
 }
diff --git a/libreplan-webapp/src/main/webapp/myaccount/monthlyTimesheet.zul b/libreplan-webapp/src/main/webapp/myaccount/monthlyTimesheet.zul
index bb0db9ae3..cb3f126d4 100644
--- a/libreplan-webapp/src/main/webapp/myaccount/monthlyTimesheet.zul
+++ b/libreplan-webapp/src/main/webapp/myaccount/monthlyTimesheet.zul
@@ -30,6 +30,15 @@
     <window apply="org.libreplan.web.users.dashboard.MonthlyTimesheetController"
         self="@{define(content)}" title="${i18n:_('Monthly timesheet')}">
 
+        <button id="previousMonth"
+            onClick="controller.previousMonth();"
+            label="${i18n:_('Previous')}"
+            disabled="@{controller.firstMonth}" />
+        <button id="nextMonth"
+            onClick="controller.nextMonth();"
+            label="${i18n:_('Next')}"
+            disabled="@{controller.lastMonth}" />
+
         <groupbox style="margin-top: 5px" closable="false">
             <caption label="${i18n:_('Timesheet data')}" />
             <grid fixedLayout="true">