diff --git a/libreplan-business/src/main/java/org/libreplan/business/expensesheet/daos/ExpenseSheetLineDAO.java b/libreplan-business/src/main/java/org/libreplan/business/expensesheet/daos/ExpenseSheetLineDAO.java
index f1fc0d4d0..b89f77613 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/expensesheet/daos/ExpenseSheetLineDAO.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/expensesheet/daos/ExpenseSheetLineDAO.java
@@ -19,11 +19,19 @@
 
 package org.libreplan.business.expensesheet.daos;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.hibernate.Criteria;
+import org.hibernate.criterion.Restrictions;
 import org.libreplan.business.common.daos.IntegrationEntityDAO;
 import org.libreplan.business.expensesheet.entities.ExpenseSheetLine;
+import org.libreplan.business.orders.entities.OrderElement;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.context.annotation.Scope;
 import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
 
 /**
  * DAO for {@link ExpenseSheetLine}
@@ -35,6 +43,39 @@ import org.springframework.stereotype.Repository;
 public class ExpenseSheetLineDAO extends IntegrationEntityDAO<ExpenseSheetLine> implements
         IExpenseSheetLineDAO {
 
+    @SuppressWarnings("unchecked")
+    @Override
+    @Transactional(readOnly = true)
+    public List<ExpenseSheetLine> findByOrderElement(OrderElement orderElement) {
+        if (orderElement.isNewObject()) {
+            return new ArrayList<ExpenseSheetLine>();
+        }
 
+        // Prepare criteria
+        final Criteria criteria = getSession().createCriteria(ExpenseSheetLine.class);
+        criteria.add(Restrictions.eq("orderElement", orderElement));
+        return criteria.list();
+    }
+
+    @Override
+    public List<ExpenseSheetLine> findByOrderElementAndChildren(OrderElement orderElement) {
+        if (orderElement.isNewObject()) {
+            return new ArrayList<ExpenseSheetLine>();
+        }
+        return findByOrderAndItsChildren(orderElement);
+    }
+
+    @SuppressWarnings("unchecked")
+    @Transactional(readOnly = true)
+    public List<ExpenseSheetLine> findByOrderAndItsChildren(OrderElement orderElement) {
+        // Create collection with current orderElement and all its children
+        Collection<OrderElement> orderElements = orderElement.getAllChildren();
+        orderElements.add(orderElement);
+
+        // Prepare criteria
+        final Criteria criteria = getSession().createCriteria(ExpenseSheetLine.class);
+        criteria.add(Restrictions.in("orderElement", orderElements));
+        return criteria.list();
+    }
 
 }
diff --git a/libreplan-business/src/main/java/org/libreplan/business/expensesheet/daos/IExpenseSheetLineDAO.java b/libreplan-business/src/main/java/org/libreplan/business/expensesheet/daos/IExpenseSheetLineDAO.java
index 62c88fb23..7b1b88fcb 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/expensesheet/daos/IExpenseSheetLineDAO.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/expensesheet/daos/IExpenseSheetLineDAO.java
@@ -19,8 +19,11 @@
 
 package org.libreplan.business.expensesheet.daos;
 
+import java.util.List;
+
 import org.libreplan.business.common.daos.IIntegrationEntityDAO;
 import org.libreplan.business.expensesheet.entities.ExpenseSheetLine;
+import org.libreplan.business.orders.entities.OrderElement;
 
 /**
  * Interface for ExpenseSheetLine DAO
@@ -30,4 +33,8 @@ import org.libreplan.business.expensesheet.entities.ExpenseSheetLine;
  */
 public interface IExpenseSheetLineDAO extends IIntegrationEntityDAO<ExpenseSheetLine> {
 
+    List<ExpenseSheetLine> findByOrderElement(OrderElement orderElement);
+
+    List<ExpenseSheetLine> findByOrderElementAndChildren(OrderElement orderElement);
+
 }
diff --git a/libreplan-business/src/main/java/org/libreplan/business/orders/daos/IOrderElementDAO.java b/libreplan-business/src/main/java/org/libreplan/business/orders/daos/IOrderElementDAO.java
index 3d1d49ee6..dcddd9778 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/orders/daos/IOrderElementDAO.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/orders/daos/IOrderElementDAO.java
@@ -126,4 +126,6 @@ public interface IOrderElementDAO extends IIntegrationEntityDAO<OrderElement> {
      */
     OrderElement findRepeatedOrderCodeInDB(OrderElement order);
 
+    boolean hasImputedExpenseSheet(Long id) throws InstanceNotFoundException;
+
 }
diff --git a/libreplan-business/src/main/java/org/libreplan/business/orders/daos/OrderElementDAO.java b/libreplan-business/src/main/java/org/libreplan/business/orders/daos/OrderElementDAO.java
index 150a09daf..29dab5380 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/orders/daos/OrderElementDAO.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/orders/daos/OrderElementDAO.java
@@ -40,6 +40,7 @@ import org.hibernate.criterion.Restrictions;
 import org.libreplan.business.common.IAdHocTransactionService;
 import org.libreplan.business.common.daos.IntegrationEntityDAO;
 import org.libreplan.business.common.exceptions.InstanceNotFoundException;
+import org.libreplan.business.expensesheet.daos.IExpenseSheetLineDAO;
 import org.libreplan.business.orders.entities.OrderElement;
 import org.libreplan.business.orders.entities.SchedulingDataForVersion;
 import org.libreplan.business.orders.entities.TaskSource;
@@ -73,6 +74,9 @@ public class OrderElementDAO extends IntegrationEntityDAO<OrderElement>
     @Autowired
     private IWorkReportLineDAO workReportLineDAO;
 
+    @Autowired
+    private IExpenseSheetLineDAO expenseSheetLineDAO;
+
     @Autowired
     private IWorkReportDAO workReportDAO;
 
@@ -486,4 +490,9 @@ public class OrderElementDAO extends IntegrationEntityDAO<OrderElement>
         return result;
     }
 
+    @Override
+    public boolean hasImputedExpenseSheet(Long id) throws InstanceNotFoundException {
+        OrderElement orderElement = find(id);
+        return (!expenseSheetLineDAO.findByOrderElementAndChildren(orderElement).isEmpty());
+    }
 }
\ No newline at end of file
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/orders/IOrderModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/orders/IOrderModel.java
index b79408223..c7f2cd096 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/orders/IOrderModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/orders/IOrderModel.java
@@ -128,4 +128,6 @@ public interface IOrderModel extends IIntegrationEntityModel {
 
     PlanningState getPlanningState();
 
+    boolean hasImputedExpenseSheets(OrderElement order);
+
 }
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderCRUDController.java b/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderCRUDController.java
index bbd39fdb9..9b76865c9 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderCRUDController.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderCRUDController.java
@@ -855,6 +855,16 @@ public class OrderCRUDController extends GenericForwardComposer {
     }
 
     private void remove(Order order) {
+        boolean hasImputedExpenseSheets = orderModel.hasImputedExpenseSheets(order);
+        if (hasImputedExpenseSheets) {
+            messagesForUser
+                    .showMessage(
+                            Level.ERROR,
+                            _("You can not remove the project \"{0}\" because this one has imputed expense sheets.",
+                                    order.getName()));
+            return;
+        }
+
         boolean alreadyInUse = orderModel.isAlreadyInUseAndIsOnlyInCurrentScenario(order);
         if (alreadyInUse) {
             messagesForUser
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderElementTreeController.java b/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderElementTreeController.java
index a01a96076..3dc68307e 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderElementTreeController.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderElementTreeController.java
@@ -679,6 +679,16 @@ public class OrderElementTreeController extends TreeController<OrderElement> {
 
     @Override
     public void remove(OrderElement element) {
+        boolean hasImputedExpenseSheets = orderModel.hasImputedExpenseSheets(element);
+        if (hasImputedExpenseSheets) {
+            messagesForUser
+                    .showMessage(
+                            Level.ERROR,
+                            _("You can not remove the project \"{0}\" because this one has imputed expense sheets.",
+                                    element.getName()));
+            return;
+        }
+
         boolean alreadyInUse = orderModel.isAlreadyInUse(element);
         if (alreadyInUse) {
             messagesForUser
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderModel.java
index d379276e2..f0b26ba0d 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/orders/OrderModel.java
@@ -850,4 +850,14 @@ public class OrderModel extends IntegrationEntityModel implements IOrderModel {
         return planningState;
     }
 
+    @Override
+    @Transactional(readOnly = true)
+    public boolean hasImputedExpenseSheets(OrderElement order) {
+        try {
+            return orderElementDAO.hasImputedExpenseSheet(order.getId());
+        } catch (InstanceNotFoundException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
 }