diff --git a/libreplan-business/src/main/java/org/libreplan/business/advance/bootstrap/PredefinedAdvancedTypes.java b/libreplan-business/src/main/java/org/libreplan/business/advance/bootstrap/PredefinedAdvancedTypes.java
index 26b7eaf3f..c3c45ce5d 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/advance/bootstrap/PredefinedAdvancedTypes.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/advance/bootstrap/PredefinedAdvancedTypes.java
@@ -36,16 +36,26 @@ public enum PredefinedAdvancedTypes {
     UNITS("units", new BigDecimal(Integer.MAX_VALUE),
             new BigDecimal(1), false, false),
     SUBCONTRACTOR("subcontractor",
-            new BigDecimal(100), new BigDecimal(0.01), true, false);
+            new BigDecimal(100), new BigDecimal(0.01), true, false),
+    TIMESHEETS("timesheets",
+            new BigDecimal(100), new BigDecimal(0.01), true, false, true);
+
 
     private PredefinedAdvancedTypes(String name, BigDecimal defaultMaxValue,
             BigDecimal precision, boolean percentage, boolean qualityForm) {
+        this(name, defaultMaxValue, precision, percentage, qualityForm, false);
+    }
+
+    private PredefinedAdvancedTypes(String name, BigDecimal defaultMaxValue,
+            BigDecimal precision, boolean percentage, boolean qualityForm,
+            boolean readOnly) {
         this.name = name;
         this.defaultMaxValue = defaultMaxValue.setScale(4,
                 BigDecimal.ROUND_HALF_UP);
         this.unitPrecision = precision.setScale(4, BigDecimal.ROUND_HALF_UP);
         this.percentage = percentage;
         this.qualityForm = qualityForm;
+        this.readOnly = readOnly;
     }
 
     private final String name;
@@ -58,9 +68,13 @@ public enum PredefinedAdvancedTypes {
 
     private final boolean qualityForm;
 
+    private final boolean readOnly;
+
     public AdvanceType createType() {
-        return AdvanceType.create(name, defaultMaxValue, false, unitPrecision,
-                true, percentage, qualityForm);
+        AdvanceType advanceType = AdvanceType.create(name, defaultMaxValue,
+                false, unitPrecision, true, percentage, qualityForm);
+        advanceType.setReadOnly(readOnly);
+        return advanceType;
     }
 
     public String getTypeName() {
diff --git a/libreplan-business/src/main/java/org/libreplan/business/advance/entities/AdvanceType.java b/libreplan-business/src/main/java/org/libreplan/business/advance/entities/AdvanceType.java
index 74f476ea4..bbbb320c9 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/advance/entities/AdvanceType.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/advance/entities/AdvanceType.java
@@ -86,6 +86,8 @@ public class AdvanceType extends BaseEntity implements IHumanIdentifiable{
 
     private IAdvanceTypeDAO avanceTypeDAO = Registry.getAdvanceTypeDao();
 
+    private boolean readOnly = false;
+
     /**
      * Constructor for hibernate. Do not use!
      */
@@ -271,4 +273,12 @@ public class AdvanceType extends BaseEntity implements IHumanIdentifiable{
         return true;
     }
 
+    public void setReadOnly(boolean readOnly) {
+        this.readOnly = readOnly;
+    }
+
+    public boolean isReadOnly() {
+        return readOnly;
+    }
+
 }
diff --git a/libreplan-business/src/main/resources/db.changelog-1.3.xml b/libreplan-business/src/main/resources/db.changelog-1.3.xml
index 3bd067ddd..cd0535082 100644
--- a/libreplan-business/src/main/resources/db.changelog-1.3.xml
+++ b/libreplan-business/src/main/resources/db.changelog-1.3.xml
@@ -87,4 +87,20 @@
         </addColumn>
     </changeSet>
 
+    <changeSet id="add-new-column-read_only-to-advance_type" author="mrego">
+        <comment>
+            Add new column read_only with default value FALSE to advance_type
+            table.
+        </comment>
+        <addColumn tableName="advance_type">
+            <column name="read_only" type="BOOLEAN" />
+        </addColumn>
+        <addDefaultValue tableName="advance_type" columnName="read_only"
+            defaultValueBoolean="FALSE" />
+        <addNotNullConstraint tableName="advance_type"
+            columnName="read_only"
+            defaultNullValue="FALSE"
+            columnDataType="BOOLEAN" />
+    </changeSet>
+
 </databaseChangeLog>
diff --git a/libreplan-business/src/main/resources/org/libreplan/business/advance/entities/Advance.hbm.xml b/libreplan-business/src/main/resources/org/libreplan/business/advance/entities/Advance.hbm.xml
index 5476067f9..acfe6608e 100644
--- a/libreplan-business/src/main/resources/org/libreplan/business/advance/entities/Advance.hbm.xml
+++ b/libreplan-business/src/main/resources/org/libreplan/business/advance/entities/Advance.hbm.xml
@@ -23,6 +23,7 @@
     <property name="percentage" access="field"/>
     <property name="qualityForm" access="field"
         column="quality_form" />
+    <property name="readOnly" column="read_only" />
 
 </class>
 
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/orders/IManageOrderElementAdvancesModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/orders/IManageOrderElementAdvancesModel.java
index 4cd1b9b83..80333810e 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/orders/IManageOrderElementAdvancesModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/orders/IManageOrderElementAdvancesModel.java
@@ -99,6 +99,8 @@ public interface IManageOrderElementAdvancesModel {
 
     public boolean isQualityForm(AdvanceAssignment advance);
 
+    public boolean isReadOnly(AdvanceAssignment advance);
+
     public boolean lessThanPreviousMeasurements();
 
     public boolean hasConsolidatedAdvances(AdvanceAssignment advance);
@@ -134,4 +136,5 @@ public interface IManageOrderElementAdvancesModel {
 
     Boolean isAlreadyReportedProgressWith(LocalDate date);
 
+
 }
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/orders/ManageOrderElementAdvancesController.java b/libreplan-webapp/src/main/java/org/libreplan/web/orders/ManageOrderElementAdvancesController.java
index 3154f5502..2ff8aa908 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/orders/ManageOrderElementAdvancesController.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/orders/ManageOrderElementAdvancesController.java
@@ -366,7 +366,10 @@ public class ManageOrderElementAdvancesController extends
             if (advance.getAdvanceType() != null) {
                 isQualityForm = manageOrderElementAdvancesModel
                         .isQualityForm(advance);
-                if (manageOrderElementAdvancesModel
+                readOnlyAdvance = manageOrderElementAdvancesModel
+                        .isReadOnly(advance);
+                if (!readOnlyAdvance
+                        && manageOrderElementAdvancesModel
                         .isSubcontratedAdvanceTypeAndSubcontratedTask(advance)) {
                     readOnlyAdvance = true;
                 }
@@ -375,12 +378,12 @@ public class ManageOrderElementAdvancesController extends
             if ((advance instanceof DirectAdvanceAssignment)
                     && ((DirectAdvanceAssignment) advance)
                             .getAdvanceMeasurements().isEmpty()
-                    && !isQualityForm) {
+                    && !isQualityForm && !readOnlyAdvance) {
                 appendComboboxAdvanceType(listItem);
             } else {
                 appendLabelAdvanceType(listItem);
             }
-            appendDecimalBoxMaxValue(listItem, isQualityForm);
+            appendDecimalBoxMaxValue(listItem, isQualityForm || readOnlyAdvance);
             appendDecimalBoxValue(listItem);
             appendLabelPercentage(listItem);
             appendDateBoxDate(listItem);
@@ -401,7 +404,8 @@ public class ManageOrderElementAdvancesController extends
         for(AdvanceType advanceType : listAdvanceType){
             if (!advanceType.getUnitName().equals(
                     PredefinedAdvancedTypes.CHILDREN.getTypeName())
-                    && !advanceType.isQualityForm()) {
+                    && !advanceType.isQualityForm()
+                    && !advanceType.isReadOnly()) {
                 Comboitem comboItem = new Comboitem();
                 comboItem.setValue(advanceType);
                 comboItem.setLabel(advanceType.getUnitName());
@@ -461,7 +465,7 @@ public class ManageOrderElementAdvancesController extends
     }
 
     private void appendDecimalBoxMaxValue(final Listitem listItem,
-            boolean isQualityForm) {
+            boolean isQualityFormOrReadOnly) {
         final AdvanceAssignment advanceAssignment = (AdvanceAssignment) listItem
                 .getValue();
         final Decimalbox maxValue = new Decimalbox();
@@ -469,7 +473,7 @@ public class ManageOrderElementAdvancesController extends
 
         final DirectAdvanceAssignment directAdvanceAssignment;
         if ((advanceAssignment instanceof IndirectAdvanceAssignment)
-                || isQualityForm
+                || isQualityFormOrReadOnly
                 || (advanceAssignment.getAdvanceType() != null && advanceAssignment
                         .getAdvanceType().getPercentage())
                 || manageOrderElementAdvancesModel
@@ -708,6 +712,11 @@ public class ManageOrderElementAdvancesController extends
             addMeasurementButton.setDisabled(true);
             addMeasurementButton
                     .setTooltiptext(_("Progress that are reported by quality forms can not be modified"));
+        } else if ((advance.getAdvanceType() != null)
+                && (advance.getAdvanceType().isReadOnly())) {
+            addMeasurementButton.setDisabled(true);
+            addMeasurementButton
+                    .setTooltiptext(_("This progress type cannot be modified"));
         } else if (advance instanceof IndirectAdvanceAssignment) {
             addMeasurementButton.setDisabled(true);
             addMeasurementButton
@@ -739,6 +748,11 @@ public class ManageOrderElementAdvancesController extends
             removeButton.setDisabled(true);
             removeButton
                     .setTooltiptext(_("Progress that are reported by quality forms cannot be modified"));
+        } else if ((advance.getAdvanceType() != null)
+                && (advance.getAdvanceType().isReadOnly())) {
+            removeButton.setDisabled(true);
+            removeButton
+                    .setTooltiptext(_("This progress type cannot be modified"));
         } else if (advance instanceof IndirectAdvanceAssignment) {
             removeButton.setDisabled(true);
             removeButton
@@ -1219,6 +1233,11 @@ public class ManageOrderElementAdvancesController extends
                 removeButton.setDisabled(true);
                 removeButton
                         .setTooltiptext(_("Progress measurements that are reported by quality forms cannot be removed"));
+            } else if ((advance.getAdvanceType() != null)
+                    && (advance.getAdvanceType().isReadOnly())) {
+                removeButton.setDisabled(true);
+                removeButton
+                        .setTooltiptext(_("This progress type cannot cannot be removed"));
             } else if (advance.isFake()) {
                 removeButton.setDisabled(true);
                 removeButton
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/orders/ManageOrderElementAdvancesModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/orders/ManageOrderElementAdvancesModel.java
index 6f177e6ec..553864c29 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/orders/ManageOrderElementAdvancesModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/orders/ManageOrderElementAdvancesModel.java
@@ -161,7 +161,8 @@ public class ManageOrderElementAdvancesModel implements
         for (AdvanceAssignment advance : listAdvanceAssignmentsCopy) {
             if ((!listAdvanceAssignments.contains(advance))
                     && (advance instanceof DirectAdvanceAssignment)
-                    && (!advance.getAdvanceType().isQualityForm())) {
+                    && (!advance.getAdvanceType().isQualityForm())
+                    && (!advance.getAdvanceType().isReadOnly())) {
                 listAdvanceAssignments.add(advance);
             }
         }
@@ -337,7 +338,8 @@ public class ManageOrderElementAdvancesModel implements
         for (AdvanceType advanceType : this.listAdvanceTypes) {
             if ((advanceType.getUnitName()
                     .equals(PredefinedAdvancedTypes.CHILDREN.getTypeName()))
-                    || (advanceType.isQualityForm())) {
+                    || (advanceType.isQualityForm())
+                    || advanceType.isReadOnly()) {
                 continue;
             }
             if (existsAdvanceTypeAlreadyInThisOrderElement(advanceType)) {
@@ -412,6 +414,9 @@ public class ManageOrderElementAdvancesModel implements
             if (advanceType.isQualityForm()) {
                 return true;
             }
+            if (advanceType.isReadOnly()) {
+                return true;
+            }
         }
 
         if(isIndirectAdvanceAssignment){
@@ -764,6 +769,14 @@ public class ManageOrderElementAdvancesModel implements
         return advanceType.isQualityForm();
     }
 
+    @Override
+    @Transactional(readOnly = true)
+    public boolean isReadOnly(AdvanceAssignment advance) {
+        AdvanceType advanceType = advance.getAdvanceType();
+        advanceTypeDAO.reattach(advanceType);
+        return advanceType.isReadOnly();
+    }
+
     @Override
     @Transactional(readOnly = true)
     public boolean findIndirectConsolidation(