diff --git a/smash/web/models/visit.py b/smash/web/models/visit.py
index 4e96574d24dfeb8569f8a01b6e3f2f1aeb2e979b..c4c7dae7d4accd34adc47181932827b70d353ad8 100644
--- a/smash/web/models/visit.py
+++ b/smash/web/models/visit.py
@@ -5,6 +5,7 @@ from dateutil.relativedelta import relativedelta
 from django.db import models
 from django.db.models.signals import post_save
 from django.dispatch import receiver
+from django.db import transaction
 
 from web.models.constants import BOOL_CHOICES, SUBJECT_TYPE_CHOICES_CONTROL
 from web.models import Study
@@ -89,16 +90,18 @@ class Visit(models.Model):
                 datetime_end=visit_started + time_to_next_visit + relativedelta(months=study.default_visit_duration_in_months)
             )
 
-
 @receiver(post_save, sender=Visit)
-def update_visit_number(sender, instance, **kwargs):
+def check_visit_number(sender, instance, **kwargs):
+    # no other solution to ensure the visit_number is in cronological order than to sort the whole list if there are future visits
     visit = instance
-    if visit.subject is not None:
-        count = Visit.objects.filter(subject=visit.subject).filter(
-            datetime_begin__lte=visit.datetime_begin).count()
-        if count != visit.visit_number:
-            visit.visit_number = count
-            visit.save()
-            subject_visits = Visit.objects.filter(subject=visit.subject).all()
-            for subject_visit in subject_visits:
-                update_visit_number(sender, subject_visit)
+    if visit.subject is not None: #not sure if select_for_update has an effect, the tests work as well without it
+        visits_before = Visit.objects.select_for_update().filter(subject=visit.subject).filter(datetime_begin__lt=visit.datetime_begin).count()
+        # we need to sort the future visits respect to this one, if any
+        visits = Visit.objects.select_for_update().filter(subject=visit.subject).filter(datetime_begin__gte=visit.datetime_begin).order_by('datetime_begin','datetime_end')
+        with transaction.atomic(): #not sure if it has an effect, the tests work as well without it
+            for i, v in enumerate(visits):
+                if v.visit_number != (visits_before + i + 1):
+                    visit_number = (visits_before + i + 1)
+                    Visit.objects.filter(id=v.id).update(visit_number=visit_number) # does not rise post_save, we avoid recursion
+                    if v.id == visit.id:
+                        visit.visit_number = v.visit_number
diff --git a/smash/web/models/worker.py b/smash/web/models/worker.py
index ede9eb84f7322c5456033e4e2c7fe903d5bb75a0..78d2772e4eed23ab0703c60bcef75fdb2ed4c31d 100644
--- a/smash/web/models/worker.py
+++ b/smash/web/models/worker.py
@@ -153,6 +153,15 @@ class Worker(models.Model):
             return True
         return False
 
+    def current_leave_details(self):
+        holidays = self.holiday_set.filter(datetime_end__gt=datetime.datetime.now(),
+                                   datetime_start__lt=datetime.datetime.now(),
+                                    kind=AVAILABILITY_HOLIDAY).order_by('-datetime_end')
+        if len(holidays) > 0:
+            return holidays[0]
+        else:
+            return None
+
     def disable(self):
         if self.user is not None:
             self.user.is_active = False
diff --git a/smash/web/static/js/daily_planning.js b/smash/web/static/js/daily_planning.js
index 2bb9341335a17d58920a792e01b5a56c0834dcad..816a1ec4256b40b965c969e9108898c3b77e47bf 100644
--- a/smash/web/static/js/daily_planning.js
+++ b/smash/web/static/js/daily_planning.js
@@ -248,148 +248,146 @@ function remove_event(event) {
     add_event(event, event.color, event.subject_id, event.location_id, boxBody);
 }
 
-$(document).ready(function () {
-    $('#calendar').fullCalendar({
+function addDailyPlanningCalendar(calendar_selector, replace_all, calendar_dict_props){
+
+    var customButtons = {
+        datePickerButton: {
+            text: 'select',
+            click: function () {
+                var $btnCustom = $('.fc-datePickerButton-button');
+                if ($(".calendar-datepicker").length > 0) {
+                    $(".calendar-datepicker").remove();
+                }
+                else {
+                    $btnCustom.after('<div class="calendar-datepicker"/>');
+                    $(".calendar-datepicker").datepicker().on('changeDate', function (ev) {
+                        $(calendar_selector).fullCalendar('gotoDate', ev.date);
+                        $(".calendar-datepicker").remove();
+                    });
+                }
+            }
+        },
+        save: {
+            text: 'Save',
+            click: function () {
+                calendarEvents = $(calendar_selector).fullCalendar('clientEvents');
+                eventsToPersist = [];
+                var saveButton = $(".fc-save-button");
+                var currentBorder = saveButton.css('border-color');
+                $.each(calendarEvents, function (i, calendar_event) {
+                    if (calendar_event.rendering !== "background") {
+                        eventsToPersist.push({
+                            'link_id': calendar_event.link_id,
+                            'appointment_id': calendar_event.appointment_id,
+                            'link_who': parseInt(calendar_event.resourceId),
+                            'start': calendar_event.start.format()
+                        });
+                        if (calendar_event.link_id !== undefined) {
+                            var index = eventsCleared.indexOf(calendar_event.link_id);
+                            if (index > -1) {
+                                eventsCleared.splice(index, 1);
+                            }
+                        } else {
+                            var index = appointmentsCleared.indexOf(calendar_event.appointment_id);
+                            if (index > -1) {
+                                appointmentsCleared.splice(index, 1);
+                            }
+                        }
+                    }
+                });
+                $.post({
+                    url: events_url,
+                    data: {
+                        events_to_persist: JSON.stringify(eventsToPersist),
+                        events_to_clear: JSON.stringify(eventsCleared),
+                        appointments_to_clear: JSON.stringify(appointmentsCleared)
+                    },
+                    dataType: "json"
+                }).done(function (data) {
+
+                    saveButton.css('border-color', 'green');
+                    setTimeout(function () {
+                        saveButton.css('border-color', currentBorder);
+                    }, 200);
+                }).error(function (data) {
+
+                    console.log(data);
+                    saveButton.css('border-color', 'red');
+                    showErrorInfo("There was an unexpected problem with saving data. " + "Please contact administrators.");
+                    setTimeout(function () {
+                        saveButton.delay(200).css('border-color', currentBorder);
+                    }, 200);
+                });
+            }
+        },
+        clear: {
+            text: 'Clear',
+            click: function () {
+                calendarEvents = $(calendar_selector).fullCalendar('clientEvents');
+                $.each(calendarEvents, function (i, calendar_event) {
+                    remove_event(calendar_event);
+                });
+            }
+        },
+        toPdf: {
+            text: 'PDF',
+            click: function () {
+                var srcEl = document.getElementById("calendar");
+                var parent = srcEl.parentNode;
+                var container = document.createElement("div");
+                container.style.backgroundColor = "#FFFFFF";
+                container.style.width = "3840px";
+                document.body.appendChild(container);
+                container.appendChild(srcEl);
+
+                var pdf = new jsPDF('l', 'mm', [1485, 270]);
+                pdf.addHTML(container, function () {
+                    pdf.save('daily-planning.pdf');
+                    parent.appendChild(srcEl);
+                    document.body.removeChild(container);
+                });
+            }
+        }
+    };
+
+    var default_properties = {
         schedulerLicenseKey: 'CC-Attribution-NonCommercial-NoDerivatives',
         defaultView: 'agendaDay',
         eventDurationEditable: false,
         eventStartEditable: true,
         editable: true,
         selectable: true,
-        eventOverlap: function (stillEvent, movingEvent) {
-            if (stillEvent.rendering === "background") {
-                return true;
-            }
-            return false;
-        },
+        droppable: true,
         weekends: false,
+        selectHelper: true,
+        groupByResource: true,
+        displayEventTime: true,
         scrollTime: '08:00',
         slotDuration: '00:30',
         snapDuration: '00:05',
-        displayEventTime: true,
-        resourceOrder: 'role',
-        resourceGroupField: 'role',
-        dragRevertDuration: 0,
         minTime: "08:00:00",
         maxTime: "19:00:00",
-        groupByResource: true,
-        height: "auto",
-        customButtons: {
-            datePickerButton: {
-                text: 'select',
-                click: function () {
-                    var $btnCustom = $('.fc-datePickerButton-button');
-                    if ($(".calendar-datepicker").length > 0) {
-                        $(".calendar-datepicker").remove();
-                    }
-                    else {
-                        $btnCustom.after('<div class="calendar-datepicker"/>');
-                        $(".calendar-datepicker").datepicker().on('changeDate', function (ev) {
-                            $('#calendar').fullCalendar('gotoDate', ev.date);
-                            $(".calendar-datepicker").remove();
-                        });
-                    }
-                }
-            },
-            save: {
-                text: 'Save',
-                click: function () {
-                    calendarEvents = $('#calendar').fullCalendar('clientEvents');
-                    eventsToPersist = [];
-                    var saveButton = $(".fc-save-button");
-                    var currentBorder = saveButton.css('border-color');
-                    $.each(calendarEvents, function (i, calendar_event) {
-                        if (calendar_event.rendering !== "background") {
-                            eventsToPersist.push({
-                                'link_id': calendar_event.link_id,
-                                'appointment_id': calendar_event.appointment_id,
-                                'link_who': parseInt(calendar_event.resourceId),
-                                'start': calendar_event.start.format()
-                            });
-                            if (calendar_event.link_id !== undefined) {
-                                var index = eventsCleared.indexOf(calendar_event.link_id);
-                                if (index > -1) {
-                                    eventsCleared.splice(index, 1);
-                                }
-                            } else {
-                                var index = appointmentsCleared.indexOf(calendar_event.appointment_id);
-                                if (index > -1) {
-                                    appointmentsCleared.splice(index, 1);
-                                }
-                            }
-                        }
-                    });
-                    $.post({
-                        url: events_url,
-                        data: {
-                            events_to_persist: JSON.stringify(eventsToPersist),
-                            events_to_clear: JSON.stringify(eventsCleared),
-                            appointments_to_clear: JSON.stringify(appointmentsCleared)
-                        },
-                        dataType: "json"
-                    }).done(function (data) {
-
-                        saveButton.css('border-color', 'green');
-                        setTimeout(function () {
-                            saveButton.css('border-color', currentBorder);
-                        }, 200);
-                    }).error(function (data) {
-
-                        console.log(data);
-                        saveButton.css('border-color', 'red');
-                        showErrorInfo("There was an unexpected problem with saving data. " +
-                            "Please contact administrators.");
-                        setTimeout(function () {
-                            saveButton.delay(200).css('border-color', currentBorder);
-                        }, 200);
-                    });
-                }
-            },
-            clear: {
-                text: 'Clear',
-                click: function () {
-                    calendarEvents = $('#calendar').fullCalendar('clientEvents');
-                    $.each(calendarEvents, function (i, calendar_event) {
-                        remove_event(calendar_event);
-                    });
-                }
-            },
-            toPdf: {
-                text: 'PDF',
-                click: function () {
-                    var srcEl = document.getElementById("calendar");
-                    var parent = srcEl.parentNode;
-                    var container = document.createElement("div");
-                    container.style.backgroundColor = "#FFFFFF";
-                    container.style.width = "3840px";
-                    document.body.appendChild(container);
-                    container.appendChild(srcEl);
-
-                    var pdf = new jsPDF('l', 'mm', [1485, 270]);
-                    pdf.addHTML(container, function () {
-                        pdf.save('daily-planning.pdf');
-                        parent.appendChild(srcEl);
-                        document.body.removeChild(container);
-                    });
-                }
-            }
-
-        },
-        viewRender: function (view, element) {
-            var date = view.start.format('YYYY-MM-DD');
-            $('#calendar').fullCalendar('removeEvents');
-            get_subjects_events(date);
-        },
         businessHours: {
             start: '08:00',
             end: '19:00'
         },
+        dragRevertDuration: 0,
+        height: "auto",
+        customButtons: customButtons,
         header: {
             left: 'prev,next today',
             center: 'title, datePickerButton',
             right: 'save, clear, toPdf'
         },
-        droppable: true,
+        // VIEW
+        viewRender: function (view, element) {
+            var date = view.start.format('YYYY-MM-DD');
+            $(calendar_selector).fullCalendar('removeEvents');
+            get_subjects_events(date);
+        },
+        // RESOURCES
+        resourceOrder: 'role',
+        resourceGroupField: 'role',
         resourceAreaWidth: '15%',
         resourceLabelText: 'Workers',
         refetchResourcesOnNavigate: true,
@@ -421,7 +419,7 @@ $(document).ready(function () {
         },
         resources: function(callback){
                         setTimeout(function(){
-                            var view = $('#calendar').fullCalendar('getView');
+                            var view = $(calendar_selector).fullCalendar('getView');
                             $.ajax({
                                 url: resources_url,
                                 type: 'GET',
@@ -431,13 +429,14 @@ $(document).ready(function () {
                                     }
                                 }).then(function(resources){
                                     //Filter out roles
-                                    var checked_roles = $('.role_list_item > input:checked').map( (i,e) => e.value).toArray();
-                                    resources = resources.filter(resource => checked_roles.includes(resource.role));
-                                    callback(resources)
+                                    if($('.role_list_item > input').length > 0){
+                                        var checked_roles = $('.role_list_item > input:checked').map( (i,e) => e.value).toArray();
+                                        resources = resources.filter(resource => checked_roles.includes(resource.role));
+                                    }
+                                    callback(resources);
                                 });                  
                         }, 0);
         },
-        events: [],
         eventRender: function (event, element) {
             if (event.rendering !== 'background') {
                 var content =
@@ -457,6 +456,13 @@ $(document).ready(function () {
             } else {
             }
         },
+        // EVENTS
+        eventOverlap: function (stillEvent, movingEvent) {
+            if (stillEvent.rendering === "background") {
+                return true;
+            }
+            return false;
+        },
         selectAllow: function (selectInfo) {
             return false;
         },
@@ -471,7 +477,6 @@ $(document).ready(function () {
         eventDragStart: function (event, jsEvent, view) {
             $('.popover').popover('hide');
         },
-        selectHelper: true,
         drop: function (date, jsEvent, ui, resourceId) {
             $(this).remove();
         },
@@ -482,9 +487,20 @@ $(document).ready(function () {
             };
             setTimeout(function() {resizeCalendarColumns()}, 100);
         }
-    });
-})
-;
+    };
+
+    // REPLACE DEFAULT PROPERTIES
+    if(replace_all){
+        default_properties = calendar_dict_props;
+    }else{
+        for (var key in calendar_dict_props) {
+            default_properties[key] = calendar_dict_props[key];
+        }
+    }
+
+    $(calendar_selector).fullCalendar(default_properties);
+
+}
 
 //RESIZE COLUMNS AND ENABLE HORIZONTAL SCROLL
 function resizeCalendarColumns(){
diff --git a/smash/web/templates/_base.html b/smash/web/templates/_base.html
index e34aa85db3fe86f59fcb8206505520d72c35a65c..b08784ea6188dd5a401844dbe45cda74c254ba30 100644
--- a/smash/web/templates/_base.html
+++ b/smash/web/templates/_base.html
@@ -270,7 +270,7 @@ desired effect
         {% block footer %}
             <!-- To the right -->
             <div class="pull-right hidden-xs">
-                Version: <strong>0.12.0</strong> (6 Nov 2018)
+                Version: <strong>0.12.1</strong> (13 Nov 2018)
             </div>
 
             <!-- Default to the left -->
diff --git a/smash/web/templates/appointments/add.html b/smash/web/templates/appointments/add.html
index bf87695b3f1f00caf74b6db18777f2ec762445be..9fc04985e5e152a2daf9db4790479f9bff949f36 100644
--- a/smash/web/templates/appointments/add.html
+++ b/smash/web/templates/appointments/add.html
@@ -4,12 +4,16 @@
 
 {% block styles %}
     {{ block.super }}
+
     <!-- DataTables -->
     <link rel="stylesheet" href="{% static 'AdminLTE/plugins/datatables/dataTables.bootstrap.css' %}">
 
     <!-- fullCalendar 2.2.5-->
     <link rel="stylesheet" href="{% static 'AdminLTE/plugins/fullcalendar/fullcalendar.min.css' %}">
     <link rel="stylesheet" href="{% static 'AdminLTE/plugins/fullcalendar/fullcalendar.print.css' %}" media="print">
+    <link rel="stylesheet" href="{% static 'AdminLTE/plugins/fullcalendar/fullcalendar_custom.print.css' %}" media="print" />
+    <link rel="stylesheet" href="{% static 'fullcalendar-scheduler/scheduler.min.css' %}">
+    <link rel="stylesheet" href="{% static 'css/daily_planning.css' %}">
 
     {% include "includes/datetimepicker.css.html" %}
     <link rel="stylesheet" href="{% static 'css/appointment.css' %}">
@@ -18,6 +22,17 @@
             text-align: center !important;
             margin: 0;
         }
+        .tooltip_image{
+            width: 20px !important;
+            margin: 5px;
+        }
+        .subject_title{
+            padding: 0 !important;
+        }
+        .subject_title + .tooltip > .tooltip-inner, .column_title + .tooltip > .tooltip-inner {
+            background-color: #fafafa;
+            border: solid 1px #ccc;
+        }
     </style>
 {% endblock styles %}
 
@@ -47,49 +62,61 @@ New appointment for visit from {{visit_start}} to {{visit_end}}
 
             <form method="post" action="" class="form-horizontal">
                 {% csrf_token %}
-                <div class="box-body">
-                    <div class="col-sm-6">
-                        {% for field in form %}
-                            <div class="form-group {% if field.errors %}has-error{% endif %} {% if field|is_checkbox %}multi-checkboxes{% endif %}">
-                                <label class="col-sm-4 control-label">
-                                    {{ field.label }}
-                                </label>
-
-                                <div class="col-sm-8">
-                                    {{ field|add_class:'form-control' }}
+                <div class="row">
+                    <div class="box-body">
+                        <div class="col-md-6">
+                            {% for field in form %}
+                                <div class="form-group {% if field.errors %}has-error{% endif %} {% if field|is_checkbox %}multi-checkboxes{% endif %}">
+                                    <label class="col-sm-4 control-label">
+                                        {{ field.label }}
+                                    </label>
+
+                                    <div class="col-sm-8">
+                                        {{ field|add_class:'form-control' }}
+                                    </div>
+
+                                    {% if field.errors %}
+                                        <span class="help-block">
+      							{{ field.errors }}
+      						</span>
+                                    {% endif %}
+                                </div>
+                            {% endfor %}
+                        </div>
+                        <div class="col-md-6">
+                            <div class="box box-primary">
+                                <div class="box-body no-padding">
+                                    <div id="side_calendar"></div>
                                 </div>
-
-                                {% if field.errors %}
-                                    <span class="help-block">
-  							{{ field.errors }}
-  						</span>
-                                {% endif %}
-                            </div>
-                        {% endfor %}
-                    </div>
-                    <div class="col-md-6">
-                        <div class="box box-primary">
-                            <div class="box-body no-padding">
-                                <div id="calendar"></div>
                             </div>
                         </div>
-                    </div>
-                </div><!-- /.box-body -->
-
-
-                <div class="box-footer">
-                    <div class="col-sm-6">
-                        <button type="submit" class="btn btn-block btn-success">Add</button>
-                    </div>
-                    <div class="col-sm-6">
-                        <a href="{% url 'web.views.visits' %}" class="btn btn-block btn-default">Cancel</a>
-                    </div>
-                </div><!-- /.box-footer -->
+                    </div><!-- /.box-body -->
+                </div>
+                <div class="row">
+                    <div class="box-footer">
+                        <div class="col-sm-6">
+                            <button type="submit" class="btn btn-block btn-success">Add</button>
+                        </div>
+                        <div class="col-sm-6">
+                            <a href="{% url 'web.views.visits' %}" class="btn btn-block btn-default">Cancel</a>
+                        </div>
+                    </div><!-- /.box-footer -->
+                </div>
             </form>
 
 
         </div>
 
+        <div class="row">
+            <div class="col-md-12">
+                <div class="box box-primary">
+                    <div class="box-body no-padding">
+                        <div id="calendar"></div>
+                    </div>
+                </div>
+            </div>
+        </div>
+
     {% endblock %}
 
 
@@ -101,8 +128,9 @@ New appointment for visit from {{visit_start}} to {{visit_end}}
     <script src="{% static 'AdminLTE/plugins/datatables/jquery.dataTables.min.js' %}"></script>
     <script src="{% static 'AdminLTE/plugins/datatables/dataTables.bootstrap.min.js' %}"></script>
     <script src="{% static 'AdminLTE/plugins/moment.js/moment.min.js' %}"></script>
-    <script src="{% static 'AdminLTE/plugins/fullcalendar/fullcalendar.min.js' %}"></script>
     <script src="{% static 'js/appointment.js' %}"></script>
+    <script src="{% static 'fullcalendar-scheduler/lib/fullcalendar.min.js' %}"></script>
+    <script src="{% static 'fullcalendar-scheduler/scheduler.min.js' %}"></script>
     <script>
         $(function () {
             $('#table').DataTable({
@@ -113,14 +141,16 @@ New appointment for visit from {{visit_start}} to {{visit_end}}
                 "info": true,
                 "autoWidth": false
             });
-            $('#calendar').fullCalendar({
-                defaultDate: moment('{{visit_start}}'),
+            //SIDE CALENDAR
+            addDailyPlanningCalendar('#side_calendar', true, {
+                schedulerLicenseKey: 'CC-Attribution-NonCommercial-NoDerivatives',
+                defaultDate: moment.max(moment('{{visit_start}}'), moment()),
+                editable: false,
                 header: {
                     left: 'prev,next today',
                     center: 'title',
                     right: 'month,agendaWeek'
                 },
-                editable: false,
                 dayClick: function (date, jsEvent, view) {
                     var dateString = date.format();
                     if (dateString.indexOf("T") >= 0) {
@@ -129,6 +159,7 @@ New appointment for visit from {{visit_start}} to {{visit_end}}
                         dateString = dateString + " 09:00";
                     }
                     document.getElementById("id_datetime_when").value = dateString;
+                    $('#id_datetime_when').change();
                     getWorkerAvailability();
                 },
                 eventClick: function (calEvent, jsEvent, view) {
@@ -214,7 +245,35 @@ New appointment for visit from {{visit_start}} to {{visit_end}}
         }
 
         $('select.search_worker_availability, input[name="datetime_when"], input[name="length"]').on("change", getWorkerAvailability);
+
+        $("#id_datetime_when").on("change paste keyup", function() {
+            var date = $("#id_datetime_when").val(); 
+            date = moment(date); 
+            $('#calendar').fullCalendar('gotoDate', date);
+        });
+
+        var resources_url = '{% url 'web.api.workers.daily_planning' %}';
+        var events_url = '{% url 'web.api.events_persist' %}';
+
+        $(document).ready(function () {
+            addDailyPlanningCalendar('#calendar', false, {
+                eventDurationEditable: false,
+                eventStartEditable: false,
+                editable: false,
+                selectable: false,
+                droppable: false,
+                customButtons: {},
+                header: {
+                    left: '',
+                    center: 'title',
+                    right: ''
+                }
+            });
+        });    
+
     </script>
 
     {% include "includes/datetimepicker.js.html" %}
+    <script src="{% static 'js/daily_planning.js' %}"></script>
+    
 {% endblock scripts %}
diff --git a/smash/web/templates/daily_planning.html b/smash/web/templates/daily_planning.html
index 63b552701589c09f7ce5b04d23c9e827277bc131..4d6cc2058df16128406951a76d9223d55730fbeb 100644
--- a/smash/web/templates/daily_planning.html
+++ b/smash/web/templates/daily_planning.html
@@ -85,6 +85,10 @@
             $('#calendar').fullCalendar('refetchResources');
         }
 
+        $(document).ready(function () {
+            addDailyPlanningCalendar('#calendar', false, {});
+        });    
+
     </script>
     {% include "includes/datepicker.js.html" %}
     <script src="{% static 'js/daily_planning.js' %}"></script>
diff --git a/smash/web/templates/doctors/index.html b/smash/web/templates/doctors/index.html
index 1accfd94d238279684ff6d4fe11d6085b05976b8..0884c2a59d786277475519c5174b84311e09d260 100644
--- a/smash/web/templates/doctors/index.html
+++ b/smash/web/templates/doctors/index.html
@@ -5,6 +5,20 @@
     {{ block.super }}
     <!-- DataTables -->
     <link rel="stylesheet" href="{% static 'AdminLTE/plugins/datatables/dataTables.bootstrap.css' %}">
+    <style type="text/css">
+    .no_leave{
+        height: 100%;
+        line-height: 2.5;
+        text-align: center;
+        background-color: #00a65b;
+    }
+    .on_leave{
+        height: 100%;
+        line-height: 2.5;
+        text-align: center;
+        background-color: #dd4b39;
+    }
+    </style>
 {% endblock styles %}
 
 {% block ui_active_tab %}'workers'{% endblock ui_active_tab %}
@@ -53,7 +67,7 @@
                 <th>Languages</th>
                 <th>Details</th>
                 {% if worker_type == 'STAFF' %}
-                    <th>On leave</th>
+                    <th>At work</th>
                     <th>Disabled</th>
                 {% endif %}
             </tr>
@@ -82,9 +96,9 @@
                     {% if worker_type == 'STAFF' %}
                         <td>
                             {% if worker.is_on_leave %}
-                                <button type="button" class="btn btn-block btn-danger">YES</button>
+                                <div title="Worker is on leave until: {{ worker.current_leave_details.datetime_end }}" class="on_leave">✘</div>
                             {% else %}
-                                <button type="button" class="btn btn-block btn-success">NO</button>
+                                <div title="Worker is not on leave" class="no_leave">✔</div>
                             {% endif %}
                         </td>
                         <td>
@@ -120,5 +134,7 @@
                 "autoWidth": false
             });
         });
+
+        $('.no_leave, .on_leave').tooltip();
     </script>
 {% endblock scripts %}
diff --git a/smash/web/tests/models/test_visit.py b/smash/web/tests/models/test_visit.py
index c7d577fe5ab759f4d29d7e104db402fa33c63e78..85ea3d4fb4ecbf740669cbfcf0b44c43927a3246 100644
--- a/smash/web/tests/models/test_visit.py
+++ b/smash/web/tests/models/test_visit.py
@@ -5,9 +5,52 @@ from django.test import TestCase
 from web.models import Visit
 from web.models.constants import SUBJECT_TYPE_CHOICES_PATIENT
 from web.tests.functions import create_study_subject, create_visit
+from web.utils import get_today_midnight_date
 
+import logging
+logger = logging.getLogger(__name__)
 
 class VisitModelTests(TestCase):
+    def test_so_called_no_concurrency(self):
+        subject = create_study_subject()
+        Visit.objects.filter(subject=subject).all().delete()
+        visit1 = create_visit(subject=subject)
+        visit1.datetime_end = get_today_midnight_date() + datetime.timedelta(days=1)
+        visit1.save()
+        self.assertEquals(1, visit1.visit_number)
+        visit2 = create_visit(subject=subject)
+        visit2.datetime_end = get_today_midnight_date() + datetime.timedelta(days=2)
+        visit2.save()
+        visit2.refresh_from_db()
+        self.assertEquals(2, visit2.visit_number)
+
+    def test_socalled_concurrency(self):
+        subject = create_study_subject()
+        Visit.objects.filter(subject=subject).all().delete()
+        visit1 = create_visit(subject=subject) #post save will be raised
+        visit2 = create_visit(subject=subject) #post save will be raised
+
+        visit1.datetime_end = get_today_midnight_date() + datetime.timedelta(days=1)
+        visit2.datetime_end = get_today_midnight_date() + datetime.timedelta(days=2)
+        
+        visit1.save() #post save will be raised
+        visit2.save() #post save will be raised
+        
+        visit1.refresh_from_db()
+        visit2.refresh_from_db()
+        self.assertEquals(1, visit1.visit_number)
+        self.assertEquals(2, visit2.visit_number)
+
+        datetime_begin = get_today_midnight_date() - datetime.timedelta(days=60)
+        datetime_end   = get_today_midnight_date() - datetime.timedelta(days=55)
+        visit3 = create_visit(subject=subject, datetime_begin=datetime_begin, datetime_end=datetime_end) #post save will be raised
+        visit1.refresh_from_db()
+        visit2.refresh_from_db()
+        visit3.refresh_from_db()
+        self.assertEquals(1, visit3.visit_number)
+        self.assertEquals(2, visit1.visit_number)
+        self.assertEquals(3, visit2.visit_number)
+
     def test_mark_as_finished(self):
         subject = create_study_subject()
         visit = create_visit(subject)
diff --git a/smash/web/tests/models/test_worker.py b/smash/web/tests/models/test_worker.py
index 338ef668e0ca0b9befe465f28e17884ba7613f98..97c0ac5092bbbf483c14fb919fbe944eae5ac5ef 100644
--- a/smash/web/tests/models/test_worker.py
+++ b/smash/web/tests/models/test_worker.py
@@ -61,6 +61,16 @@ class WorkerModelTests(TestCase):
 
         self.assertTrue(worker.is_on_leave())
 
+    def test_current_leave_details(self):
+        worker = create_worker()
+        self.assertEqual(worker.current_leave_details(), None)
+        h = Holiday(person=worker,
+                datetime_start=get_today_midnight_date() + datetime.timedelta(days=-2),
+                datetime_end=get_today_midnight_date() + datetime.timedelta(days=2))
+        h.save()
+
+        self.assertEqual(worker.current_leave_details(), h)
+
     def test_get_by_user_for_anonymous(self):
         self.assertIsNone(Worker.get_by_user(AnonymousUser()))