diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/CriterionSatisfaction.java b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/CriterionSatisfaction.java
index 9fc8a1630..c4f500b9d 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/CriterionSatisfaction.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/CriterionSatisfaction.java
@@ -282,4 +282,9 @@ public class CriterionSatisfaction extends BaseEntity {
             Validate.isTrue(finishDate == null || startDate.equals(finishDate)
                     || startDate.before(finishDate));
     }
+
+    public ResourceEnum getResourceType() {
+        return criterion.getType().getResource();
+    }
+
 }
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Machine.java b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Machine.java
index d0654df5f..62a222954 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Machine.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Machine.java
@@ -132,4 +132,14 @@ public class Machine extends Resource {
             return true;
         }
     }
+
+    @Override
+    protected boolean isCriterionSatisfactionOfCorrectType(
+       CriterionSatisfaction c) {
+
+        return super.isCriterionSatisfactionOfCorrectType(c) ||
+            c.getResourceType().equals(ResourceEnum.MACHINE);
+
+    }
+
 }
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Resource.java b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Resource.java
index 36a621729..0156babf3 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Resource.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Resource.java
@@ -33,6 +33,7 @@ import java.util.Set;
 
 import org.apache.commons.lang.Validate;
 import org.hibernate.validator.AssertFalse;
+import org.hibernate.validator.AssertTrue;
 import org.hibernate.validator.InvalidValue;
 import org.hibernate.validator.Valid;
 import org.joda.time.Days;
@@ -823,4 +824,25 @@ public abstract class Resource extends BaseEntity{
         return false;
     }
 
+    @AssertTrue(message="There are criterion satisfactions referring to " +
+        "criterion types not applicable to this resource")
+    public boolean checkConstraintCriterionSatisfactionsWithCorrectType() {
+
+        for (CriterionSatisfaction c : getCriterionSatisfactions()) {
+            if (!isCriterionSatisfactionOfCorrectType(c)) {
+                return false;
+            }
+        }
+
+        return true;
+
+    }
+
+    protected boolean isCriterionSatisfactionOfCorrectType(
+        CriterionSatisfaction c) {
+
+        return c.getResourceType().equals(ResourceEnum.RESOURCE);
+
+    }
+
 }
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Worker.java b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Worker.java
index 948a8052d..02958898c 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Worker.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/resources/entities/Worker.java
@@ -163,4 +163,13 @@ public class Worker extends Resource {
 
    }
 
+   @Override
+   protected boolean isCriterionSatisfactionOfCorrectType(
+      CriterionSatisfaction c) {
+
+       return super.isCriterionSatisfactionOfCorrectType(c) ||
+           c.getResourceType().equals(ResourceEnum.WORKER);
+
+   }
+
 }
diff --git a/navalplanner-webapp/src/test/java/org/navalplanner/web/test/ws/resources/api/ResourceServiceTest.java b/navalplanner-webapp/src/test/java/org/navalplanner/web/test/ws/resources/api/ResourceServiceTest.java
index 8a3914d9c..1a2c44ca0 100644
--- a/navalplanner-webapp/src/test/java/org/navalplanner/web/test/ws/resources/api/ResourceServiceTest.java
+++ b/navalplanner-webapp/src/test/java/org/navalplanner/web/test/ws/resources/api/ResourceServiceTest.java
@@ -46,6 +46,7 @@ import org.navalplanner.business.resources.entities.CriterionSatisfaction;
 import org.navalplanner.business.resources.entities.CriterionType;
 import org.navalplanner.business.resources.entities.Machine;
 import org.navalplanner.business.resources.entities.Resource;
+import org.navalplanner.business.resources.entities.ResourceEnum;
 import org.navalplanner.business.resources.entities.Worker;
 import org.navalplanner.ws.common.api.InstanceConstraintViolationsDTO;
 import org.navalplanner.ws.common.api.InstanceConstraintViolationsListDTO;
@@ -135,7 +136,7 @@ public class ResourceServiceTest {
         CriterionType ct = createCriterionType();
 
         /* Create a resource DTO. */
-        MachineDTO machineDTO = new MachineDTO(ct.getName(), "name", "desc");
+        MachineDTO machineDTO = new MachineDTO(getUniqueName(), "name", "desc");
         machineDTO.criterionSatisfactions.add(
             new CriterionSatisfactionDTO(
                 ' ' + ct.getName() + ' ', " c1 ", // Blank spaces intentionally
@@ -172,7 +173,7 @@ public class ResourceServiceTest {
         CriterionType ct = createCriterionType();
 
         /* Create a machine DTO. */
-        MachineDTO machineDTO = new MachineDTO(ct.getName(), "name", "desc");
+        MachineDTO machineDTO = new MachineDTO(getUniqueName(), "name", "desc");
         machineDTO.criterionSatisfactions.add(
             new CriterionSatisfactionDTO(ct.getName() , "c1",
                 null, Calendar.getInstance().getTime())); // Missing start date.
@@ -185,6 +186,36 @@ public class ResourceServiceTest {
 
     }
 
+    @Test
+    @NotTransactional
+    public void testAddResourceWithCriterionSatisfactionsWithIncorrectType() {
+
+        /* Create two criterion types. */
+        CriterionType machineCt = createCriterionType(ResourceEnum.MACHINE);
+        CriterionType workerCt = createCriterionType(ResourceEnum.WORKER);
+
+        /* Create resource DTOs. */
+        MachineDTO machineDTO = new MachineDTO(getUniqueName(), "name", "desc");
+        machineDTO.criterionSatisfactions.add(
+            new CriterionSatisfactionDTO(workerCt.getName() , "c1",
+                Calendar.getInstance().getTime(), null)); // Incorrect type.
+        WorkerDTO workerDTO = new WorkerDTO(getUniqueName(), "surname", "nif");
+        workerDTO.criterionSatisfactions.add(
+            new CriterionSatisfactionDTO(machineCt.getName() , "c1",
+                Calendar.getInstance().getTime(), null)); // Incorrect type.
+
+        /* Test. */
+        assertOneConstraintViolation(
+            resourceService.addResources(createResourceListDTO(machineDTO)));
+        assertFalse(machineDAO.existsMachineWithCodeInAnotherTransaction(
+                machineDTO.code));
+        assertOneConstraintViolation(
+            resourceService.addResources(createResourceListDTO(workerDTO)));
+        assertTrue(workerDAO.findByFirstNameSecondNameAndNifAnotherTransaction(
+            workerDTO.firstName, workerDTO.surname, workerDTO.nif).size() == 0);
+
+    }
+
     @Test
     @NotTransactional
     public void testAddResourceWithCriterionSatisfactionsWithIncorrectNames() {
@@ -282,6 +313,10 @@ public class ResourceServiceTest {
     }
 
     private CriterionType createCriterionType() {
+        return createCriterionType(ResourceEnum.RESOURCE);
+    }
+
+    private CriterionType createCriterionType(final ResourceEnum resourceType) {
 
         IOnTransaction<CriterionType> createCriterionType =
             new IOnTransaction<CriterionType>() {
@@ -291,6 +326,7 @@ public class ResourceServiceTest {
 
                 CriterionType ct = CriterionType.create(getUniqueName(),
                     "desc");
+                ct.setResource(resourceType);
                 Criterion c1 = Criterion.create("c1", ct);
                 Criterion c2 = Criterion.create("c2", ct);
                 ct.getCriterions().add(c1);
diff --git a/scripts/rest-clients/resources-sample.xml b/scripts/rest-clients/resources-sample.xml
index bbe88b163..2e532f355 100644
--- a/scripts/rest-clients/resources-sample.xml
+++ b/scripts/rest-clients/resources-sample.xml
@@ -3,12 +3,26 @@
 <resource-list xmlns="http://rest.ws.navalplanner.org">
 
     <!--  *** Machines *** -->
+
     <!-- OK -->
     <machine code=" m1 " name="m1-name" description="m1-desc"/>
+
     <!--  Missing code and name (description is optional). -->
     <machine code="" description=""/>
 
+    <!--  Criterion satisfaction of incorrect type. -->
+    <machine code="m2" name="m2-name" description="m2-desc">
+        <criterion-satisfaction-list>
+            <criterion-satisfaction
+                criterion-type-name=" WORK_RELATIONSHIP "
+                criterion-name=" hiredResourceWorkingRelationship "
+                start-date="2009-01-01"
+                finish-date=""/>
+        </criterion-satisfaction-list>
+    </machine>
+
     <!--  *** Workers *** -->
+
     <!-- OK -->
     <worker first-name="w1-firstName" surname="w1-surname" nif=" w1-nif ">
         <criterion-satisfaction-list>
@@ -24,6 +38,7 @@
                 finish-date="2009-12-25"/>
         </criterion-satisfaction-list>
     </worker>
+
     <!--  Missing first name, surname, and nif. -->
     <worker first-name="" nif=""/>