diff --git a/libreplan-business/src/main/java/org/libreplan/business/common/entities/IMonthlyTimesheetsTypeOfWorkHoursBootstrap.java b/libreplan-business/src/main/java/org/libreplan/business/common/entities/IMonthlyTimesheetsTypeOfWorkHoursBootstrap.java
new file mode 100644
index 000000000..02be6d9d9
--- /dev/null
+++ b/libreplan-business/src/main/java/org/libreplan/business/common/entities/IMonthlyTimesheetsTypeOfWorkHoursBootstrap.java
@@ -0,0 +1,34 @@
+/*
+ * This file is part of LibrePlan
+ *
+ * Copyright (C) 2012 Igalia, S.L.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.libreplan.business.common.entities;
+
+import org.libreplan.business.IDataBootstrap;
+
+/**
+ * Contract for {@link MonthlyTimesheetsTypeOfWorkHoursBootstrap}.
+ *
+ * @author Manuel Rego Casasnovas <mrego@igalia.com>
+ */
+public interface IMonthlyTimesheetsTypeOfWorkHoursBootstrap extends
+        IDataBootstrap {
+
+    void loadRequiredData();
+
+}
diff --git a/libreplan-business/src/main/java/org/libreplan/business/common/entities/MonthlyTimesheetsTypeOfWorkHoursBootstrap.java b/libreplan-business/src/main/java/org/libreplan/business/common/entities/MonthlyTimesheetsTypeOfWorkHoursBootstrap.java
new file mode 100644
index 000000000..c5597b094
--- /dev/null
+++ b/libreplan-business/src/main/java/org/libreplan/business/common/entities/MonthlyTimesheetsTypeOfWorkHoursBootstrap.java
@@ -0,0 +1,80 @@
+/*
+ * This file is part of LibrePlan
+ *
+ * Copyright (C) 2012 Igalia, S.L.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.libreplan.business.common.entities;
+
+import org.libreplan.business.BootstrapOrder;
+import org.libreplan.business.common.daos.IConfigurationDAO;
+import org.libreplan.business.common.exceptions.InstanceNotFoundException;
+import org.libreplan.business.costcategories.daos.ITypeOfWorkHoursDAO;
+import org.libreplan.business.costcategories.entities.TypeOfWorkHours;
+import org.libreplan.business.costcategories.entities.TypeOfWorkHoursBootstrap;
+import org.libreplan.business.workreports.entities.PredefinedWorkReportTypes;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
+
+/**
+ * Fills the attribute {@link Configuration#monthlyTimesheetsTypeOfWorkHours}
+ * with a default value.<br />
+ *
+ * If possible it uses the "Default" {@link TypeOfWorkHours}, but if it doesn't
+ * exist, it uses the first {@link TypeOfWorkHours} found.<br />
+ *
+ * This bootstrap have to be executed after {@link ConfigurationBootstrap} and
+ * {@link TypeOfWorkHoursBootstrap}, this is why it's marked with
+ * {@link BootstrapOrder BootstrapOrder(1)}.
+ *
+ * @author Manuel Rego Casasnovas <mrego@igalia.com>
+ */
+@Component
+@Scope("singleton")
+@BootstrapOrder(1)
+public class MonthlyTimesheetsTypeOfWorkHoursBootstrap implements
+        IMonthlyTimesheetsTypeOfWorkHoursBootstrap {
+
+    @Autowired
+    private IConfigurationDAO configurationDAO;
+
+    @Autowired
+    private ITypeOfWorkHoursDAO typeOfWorkHoursDAO;
+
+    @Override
+    @Transactional
+    public void loadRequiredData() {
+        Configuration configuration = configurationDAO.getConfiguration();
+
+        // TypeOfWorkHoursBootstrap creates the TypeOfWorkHours objects
+        // specified by PredefinedWorkReportTypes if there isn't any
+        // TypeOfWorkHours in the database
+        TypeOfWorkHours typeOfWorkHours;
+        try {
+            typeOfWorkHours = typeOfWorkHoursDAO
+                    .findUniqueByName(PredefinedWorkReportTypes.DEFAULT
+                            .getName());
+        } catch (InstanceNotFoundException e) {
+            typeOfWorkHours = typeOfWorkHoursDAO.findActive().get(0);
+        }
+
+        configuration.setMonthlyTimesheetsTypeOfWorkHours(typeOfWorkHours);
+        configurationDAO.save(configuration);
+    }
+
+}
diff --git a/libreplan-business/src/main/java/org/libreplan/business/costcategories/entities/TypeOfWorkHoursBootstrap.java b/libreplan-business/src/main/java/org/libreplan/business/costcategories/entities/TypeOfWorkHoursBootstrap.java
index 61b671624..096b6a44c 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/costcategories/entities/TypeOfWorkHoursBootstrap.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/costcategories/entities/TypeOfWorkHoursBootstrap.java
@@ -45,7 +45,7 @@ public class TypeOfWorkHoursBootstrap implements ITypeOfWorkHoursBootstrap {
     @Override
     @Transactional
     public void loadRequiredData() {
-        if (typeOfWorkHoursDAO.findAll().size() == 0) {
+        if (typeOfWorkHoursDAO.findActive().size() == 0) {
             for (PredefinedTypeOfWorkHours predefinedTypeOfWorkHours : PredefinedTypeOfWorkHours
                     .values()) {
                 TypeOfWorkHours typeOfWorkHours = predefinedTypeOfWorkHours