diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/resources/daos/IWorkerDAO.java b/navalplanner-business/src/main/java/org/navalplanner/business/resources/daos/IWorkerDAO.java
index b3f44e0a7..1dd1b4778 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/resources/daos/IWorkerDAO.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/resources/daos/IWorkerDAO.java
@@ -115,4 +115,7 @@ public interface IWorkerDAO extends IGenericDAO<Worker, Long> {
     List<Worker> findByFirstNameSecondNameAndNifAnotherTransaction(
             String firstname, String surname, String nif);
 
+    List<Object[]> getWorkingHoursGroupedPerWorker(List<String> workerNifs,
+            Date startingDate, Date endingDate);
+
 }
diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/resources/daos/WorkerDAO.java b/navalplanner-business/src/main/java/org/navalplanner/business/resources/daos/WorkerDAO.java
index 2f9f39ea5..097602db8 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/resources/daos/WorkerDAO.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/resources/daos/WorkerDAO.java
@@ -162,4 +162,51 @@ public class WorkerDAO extends GenericDAOHibernate<Worker, Long>
         return query.list();
     }
 
-}
+    @Override
+    @Transactional(readOnly = true)
+    public List<Object[]> getWorkingHoursGroupedPerWorker(
+            List<String> workerNifs, Date startingDate, Date endingDate) {
+        String strQuery = "SELECT worker.nif, SUM(wrl.numHours) "
+                + "FROM Worker worker, WorkReportLine wrl "
+                + "LEFT OUTER JOIN wrl.resource resource "
+                + "WHERE resource.id = worker.id ";
+
+        // Set date range
+        if (startingDate != null && endingDate != null) {
+            strQuery += "AND wrl.date BETWEEN :startingDate AND :endingDate ";
+        }
+        if (startingDate != null && endingDate == null) {
+            strQuery += "AND wrl.date >= :startingDate ";
+        }
+        if (startingDate == null && endingDate != null) {
+            strQuery += "AND wrl.date <= :endingDate ";
+        }
+
+        // Set workers
+        if (workerNifs != null && !workerNifs.isEmpty()) {
+            strQuery += "AND worker.nif IN (:workerNifs) ";
+        }
+
+        // Group by
+        strQuery += "GROUP BY worker.nif ";
+
+        // Order by
+        strQuery += "ORDER BY worker.nif";
+
+        // Set parameters
+        Query query = getSession().createQuery(strQuery);
+        if (startingDate != null) {
+            query.setParameter("startingDate", startingDate);
+        }
+        if (endingDate != null) {
+            query.setParameter("endingDate", endingDate);
+        }
+        if (workerNifs != null && !workerNifs.isEmpty()) {
+            query.setParameterList("workerNifs", workerNifs);
+        }
+
+        // Get result
+        return query.list();
+    }
+
+}
\ No newline at end of file
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/ws/resources/api/IResourceHoursService.java b/navalplanner-webapp/src/main/java/org/navalplanner/ws/resources/api/IResourceHoursService.java
index d57ac7683..f517f50af 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/ws/resources/api/IResourceHoursService.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/ws/resources/api/IResourceHoursService.java
@@ -20,7 +20,7 @@
 
 package org.navalplanner.ws.resources.api;
 
-import java.util.Date;
+
 
 
 /**
@@ -30,7 +30,10 @@ import java.util.Date;
  */
 public interface IResourceHoursService {
 
-    ResourceWorkedHoursListDTO getHoursAllWorkersBetween(Date startDate,
-            Date endDate);
+    ResourceWorkedHoursListDTO getHoursAllWorkersBetween(String startDate,
+            String endDate);
+
+    ResourceWorkedHoursListDTO getHoursOfWorker(String resourceCode,
+            String startDate, String endDate);
 
 }
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/ws/resources/impl/ResourceHoursServiceREST.java b/navalplanner-webapp/src/main/java/org/navalplanner/ws/resources/impl/ResourceHoursServiceREST.java
index e2ce0321e..21d665f4a 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/ws/resources/impl/ResourceHoursServiceREST.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/ws/resources/impl/ResourceHoursServiceREST.java
@@ -20,14 +20,23 @@
 
 package org.navalplanner.ws.resources.impl;
 
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Date;
+import java.util.List;
 
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 
+import org.navalplanner.business.resources.daos.IWorkerDAO;
 import org.navalplanner.ws.resources.api.IResourceHoursService;
+import org.navalplanner.ws.resources.api.ResourceWorkedHoursDTO;
 import org.navalplanner.ws.resources.api.ResourceWorkedHoursListDTO;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -41,13 +50,57 @@ import org.springframework.transaction.annotation.Transactional;
 @Service("resourceHoursServiceREST")
 public class ResourceHoursServiceREST implements IResourceHoursService {
 
+    public static final SimpleDateFormat SERVICE_DATE_FORMAT = new SimpleDateFormat(
+            "yyyy-MM-dd");
+
+    @Autowired
+    private IWorkerDAO workerDAO;
+
     @Override
     @GET
+    @Path("/{startDate}/{endDate}")
     @Transactional(readOnly = true)
-    public ResourceWorkedHoursListDTO getHoursAllWorkersBetween(Date startDate,
-            Date endDate) {
-        // TODO Auto-generated method stub
-        return null;
+    public ResourceWorkedHoursListDTO getHoursAllWorkersBetween(
+            @PathParam("startDate") String startDate,
+            @PathParam("endDate") String endDate) {
+        return getHoursOfWorker(null, startDate, endDate);
     }
 
-}
+    @Override
+    @GET
+    @Path("/{resourceCode}/{startDate}/{endDate}")
+    @Transactional(readOnly = true)
+    public ResourceWorkedHoursListDTO getHoursOfWorker(
+            @PathParam("resourceCode") String resourceCode,
+            @PathParam("startDate") String startDate,
+            @PathParam("endDate") String endDate) {
+        List<ResourceWorkedHoursDTO> result = new ArrayList<ResourceWorkedHoursDTO>();
+
+        Date startingDate;
+        Date endingDate;
+        try {
+            startingDate = SERVICE_DATE_FORMAT.parse(startDate);
+            endingDate = SERVICE_DATE_FORMAT.parse(endDate);
+        } catch (ParseException e) {
+            throw new RuntimeException(e);
+        }
+
+        List<String> workerNifs = null;
+        if (resourceCode != null) {
+            workerNifs = Arrays.asList(resourceCode);
+        }
+
+        List<Object[]> hoursPerWorker = workerDAO
+                .getWorkingHoursGroupedPerWorker(workerNifs, startingDate,
+                        endingDate);
+
+        for (Object[] pair : hoursPerWorker) {
+            ResourceWorkedHoursDTO resourceWorkedHoursDTO = new ResourceWorkedHoursDTO(
+                    (String) pair[0], ((Long) pair[1]).intValue());
+            result.add(resourceWorkedHoursDTO);
+        }
+
+        return new ResourceWorkedHoursListDTO(result, startingDate, endingDate);
+    }
+
+}
\ No newline at end of file