diff --git a/mrp_operations_extension/README.rst b/mrp_operations_extension/README.rst
index b12ce8d5c..991538ecc 100644
--- a/mrp_operations_extension/README.rst
+++ b/mrp_operations_extension/README.rst
@@ -4,6 +4,6 @@ MRP operations extension module
 This module adds:
 
 - New table to store operations to avoid typing them again.
-- Adds a relation from WorkcenterLines to BOM Lists.
+- Adds a relation from WorkcenterLines to BoM Lists.
 - Adds a relation from WorkcenterLines to Manufacturing Orders in Scheduled/Consumed/Finished Products.
 - Adds a relation between Routing Work Center Lines and Work Center extra Info.
diff --git a/mrp_operations_extension/__openerp__.py b/mrp_operations_extension/__openerp__.py
index d34f3a86c..322dbe168 100644
--- a/mrp_operations_extension/__openerp__.py
+++ b/mrp_operations_extension/__openerp__.py
@@ -21,15 +21,6 @@
     "name": "MRP Operations Extension",
     "version": "1.0",
     "category": "Manufacturing",
-    "data": [
-        "wizard/mrp_workorder_produce_view.xml",
-        "views/mrp_workcenter_view.xml",
-        "views/mrp_routing_operation_view.xml",
-        "views/mrp_production_view.xml",
-        "views/mrp_bom_view.xml",
-        "views/mrp_routing_workcenter_view.xml",
-        "security/ir.model.access.csv"
-    ],
     "author": "OdooMRP team",
     "website": "http://www.odoomrp.com",
     "contributors": [
@@ -51,7 +42,9 @@
         "views/mrp_production_view.xml",
         "views/mrp_bom_view.xml",
         "views/mrp_routing_workcenter_view.xml",
+        "views/res_config_view.xml",
         "security/ir.model.access.csv",
+        "security/mrp_operations_extension_security.xml",
     ],
     "installable": True
 }
diff --git a/mrp_operations_extension/models/__init__.py b/mrp_operations_extension/models/__init__.py
index f8074ae68..52a72a636 100644
--- a/mrp_operations_extension/models/__init__.py
+++ b/mrp_operations_extension/models/__init__.py
@@ -22,3 +22,4 @@ from . import mrp_bom
 from . import mrp_workcenter
 from . import mrp_routing_operation
 from . import stock_move
+from . import res_config
diff --git a/mrp_operations_extension/models/mrp_routing_operation.py b/mrp_operations_extension/models/mrp_routing_operation.py
index 5106eebf7..d44196eb8 100644
--- a/mrp_operations_extension/models/mrp_routing_operation.py
+++ b/mrp_operations_extension/models/mrp_routing_operation.py
@@ -17,6 +17,7 @@
 ##############################################################################
 
 from openerp import models, fields, api
+from openerp.addons import decimal_precision as dp
 
 
 class MrpOperationWorkcenter(models.Model):
@@ -34,7 +35,10 @@ class MrpOperationWorkcenter(models.Model):
                               help="Time in hours for the setup.")
     time_stop = fields.Float('Time after prod.',
                              help="Time in hours for the cleaning.")
-    op_number = fields.Integer('Número de Persona', default='0')
+    op_number = fields.Integer('# Operators', default='0')
+    op_avg_cost = fields.Float(
+        string='Operator Average Cost',
+        digits=dp.get_precision('Product Price'))
     default = fields.Boolean('Default')
 
     @api.one
@@ -46,6 +50,8 @@ class MrpOperationWorkcenter(models.Model):
             self.time_cycle = self.workcenter.time_cycle
             self.time_start = self.workcenter.time_start
             self.time_stop = self.workcenter.time_stop
+            self.op_number = self.workcenter.op_number
+            self.op_avg_cost = self.workcenter.op_avg_cost
             self.default = False
 
 
@@ -60,7 +66,7 @@ class MrpRoutingOperation(models.Model):
     workcenters = fields.Many2many(
         'mrp.workcenter', 'mrp_operation_workcenter_rel', 'operation',
         'workcenter', 'Work centers')
-    op_number = fields.Integer('Número de Persona', default='0')
+    op_number = fields.Integer('# Operators', default='0')
     do_production = fields.Boolean(
         string='Move Final Product to Stock')
     picking_type_id = fields.Many2one(
diff --git a/mrp_operations_extension/models/mrp_workcenter.py b/mrp_operations_extension/models/mrp_workcenter.py
index b1eddc7bf..31ea54a60 100644
--- a/mrp_operations_extension/models/mrp_workcenter.py
+++ b/mrp_operations_extension/models/mrp_workcenter.py
@@ -16,12 +16,22 @@
 #
 ##############################################################################
 
-from openerp import models, fields
+from openerp import models, fields, api
+from openerp.addons import decimal_precision as dp
 
 
 class MrpWorkcenter(models.Model):
     _inherit = 'mrp.workcenter'
 
+    @api.one
+    @api.depends('operators')
+    def _operators_number_avg_cost(self):
+        self.op_number = len(self.operators)
+        op_avg_cost = 0.0
+        for operator in self.operators:
+            op_avg_cost += operator.employee_ids[0].product_id.standard_price
+        self.op_avg_cost = op_avg_cost / (self.op_number or 1)
+
     pre_op_product = fields.Many2one('product.product',
                                      string='Pre Operation Cost')
     post_op_product = fields.Many2one('product.product',
@@ -29,3 +39,10 @@ class MrpWorkcenter(models.Model):
     rt_operations = fields.Many2many(
         'mrp.routing.operation', 'mrp_operation_workcenter_rel', 'workcenter',
         'operation', 'Routing Operations')
+    operators = fields.Many2many('res.users', 'mrp_wc_operator_rel',
+                                 'workcenter_id', 'operator_id', 'Operators')
+    op_number = fields.Integer(
+        string='# Operators', compute=_operators_number_avg_cost)
+    op_avg_cost = fields.Float(
+        string='Operator average cost',
+        digits=dp.get_precision('Product Price'))
diff --git a/mrp_operations_extension/models/res_config.py b/mrp_operations_extension/models/res_config.py
new file mode 100644
index 000000000..b3dc8aa16
--- /dev/null
+++ b/mrp_operations_extension/models/res_config.py
@@ -0,0 +1,27 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as published
+#    by the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see http://www.gnu.org/licenses/.
+#
+##############################################################################
+
+from openerp import models, fields
+
+
+class MrpConfigSettings(models.TransientModel):
+    _inherit = 'mrp.config.settings'
+
+    group_mrp_workers = fields.Boolean(
+        string='Manage operators ', implied_group='mrp_operations_extension.group_mrp_workers',
+        help='')
diff --git a/mrp_operations_extension/security/mrp_operations_extension_security.xml b/mrp_operations_extension/security/mrp_operations_extension_security.xml
new file mode 100644
index 000000000..63df8f15e
--- /dev/null
+++ b/mrp_operations_extension/security/mrp_operations_extension_security.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<openerp>
+    <data noupdate="0">
+        <record id="group_mrp_workers" model="res.groups">
+            <field name="name">Manufacturing Operators</field>
+            <field name="category_id" ref="base.module_category_hidden" />
+        </record>
+    </data>
+</openerp>
diff --git a/mrp_operations_extension/views/mrp_operation_workcenter_view.xml b/mrp_operations_extension/views/mrp_operation_workcenter_view.xml
index 6e75f880b..648e9145d 100644
--- a/mrp_operations_extension/views/mrp_operation_workcenter_view.xml
+++ b/mrp_operations_extension/views/mrp_operation_workcenter_view.xml
@@ -22,6 +22,8 @@
                     <field name="time_cycle" widget="float_time"/>
                     <field name="time_start" widget="float_time" />
                     <field name="time_stop" widget="float_time"/>
+                    <field name="op_number" />
+                    <field name="op_avg_cost" />
                 </group>
                 </form>
             </field>
diff --git a/mrp_operations_extension/views/mrp_routing_workcenter_view.xml b/mrp_operations_extension/views/mrp_routing_workcenter_view.xml
index ccfb50c6e..84bae1ba5 100644
--- a/mrp_operations_extension/views/mrp_routing_workcenter_view.xml
+++ b/mrp_operations_extension/views/mrp_routing_workcenter_view.xml
@@ -8,7 +8,7 @@
             <field name="inherit_id" ref="mrp.mrp_routing_workcenter_tree_view" />
             <field name="arch" type="xml">
                 <field name="name" position="before">
-                   <field name="operation"/>
+                    <field name="operation" />
                 </field>
             </field>
         </record>
@@ -20,33 +20,36 @@
             <field name="arch" type="xml">
                 <field name="name" position="before">
                     <field name="operation" />
-                    <newline/>
+                    <newline />
                 </field>
                 <field name="workcenter_id" position="after">
-                    <field name="op_wc_lines" colspan="4">
+                    <label for="op_wc_lines" colspan="4" />
+                    <field name="op_wc_lines" colspan="4" nolabel="1">
                         <tree editable="bottom">
-                            <field name="workcenter"/>
+                            <field name="workcenter" />
                             <field name="time_efficiency" />
                             <field name="capacity_per_cycle" />
                             <field name="time_start" widget="float_time" />
                             <field name="time_stop" widget="float_time" />
-                            <field name="time_cycle" widget="float_time"/>
-                            <field name="op_number"/>
-                            <field name="default"/>
+                            <field name="time_cycle" widget="float_time" />
+                            <field name="op_number" />
+                            <field name="op_avg_cost" />
+                            <field name="default" />
                         </tree>
                         <form string="Workcenter Info Lines">
                             <group>
-                                <field name="workcenter"/>
+                                <field name="workcenter" />
                                 <field name="time_efficiency" />
                                 <field name="capacity_per_cycle" />
-                                <field name="time_cycle" widget="float_time"/>
+                                <field name="time_cycle" widget="float_time" />
                                 <field name="time_start" widget="float_time" />
                                 <field name="time_stop" widget="float_time" />
-                                <field name="op_number"/>
-                                <field name="default"/>
+                                <field name="op_number" />
+                                <field name="op_avg_cost" />
+                                <field name="default" />
                             </group>
                         </form>
-                     </field>
+                    </field>
                 </field>
             </field>
         </record>
diff --git a/mrp_operations_extension/views/mrp_workcenter_view.xml b/mrp_operations_extension/views/mrp_workcenter_view.xml
index 2100aa0b4..45ad64174 100644
--- a/mrp_operations_extension/views/mrp_workcenter_view.xml
+++ b/mrp_operations_extension/views/mrp_workcenter_view.xml
@@ -1,21 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 <openerp>
     <data>
-
         <record id="mrp_workcenter_form_view_inh" model="ir.ui.view">
-            <field name="name">mrp.workcenter.tree.inh</field>
+            <field name="name">mrp.workcenter.form.inh</field>
             <field name="model">mrp.workcenter</field>
             <field name="inherit_id" ref="mrp.mrp_workcenter_view" />
             <field name="arch" type="xml">
                 <field name="time_start" position="after">
-                   <field name="pre_op_product"/>
+                    <field name="pre_op_product" />
                 </field>
                 <field name="time_stop" position="after">
-                    <field name="post_op_product"/>
+                    <field name="post_op_product" />
                 </field>
-                <xpath expr="//page[@string='General Information']" position="after">
+                <xpath expr="//page[@string='General Information']"
+                    position="after">
+                    <page string="Operators"
+                        groups="mrp_operations_extension.group_mrp_workers">
+                        <group colspan="4">
+                            <field name="op_number" />
+                            <field name="op_avg_cost" />
+                        </group>
+                        <field name="operators" />
+                    </page>
                     <page string="Routing Operations">
-                        <field name="rt_operations" nolabel="1"/>
+                        <field name="rt_operations" nolabel="1" />
                     </page>
                 </xpath>
             </field>
diff --git a/mrp_operations_extension/views/res_config_view.xml b/mrp_operations_extension/views/res_config_view.xml
new file mode 100644
index 000000000..1a557458e
--- /dev/null
+++ b/mrp_operations_extension/views/res_config_view.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<openerp>
+    <data>
+        <record model="ir.ui.view" id="mrp_settings_form_view">
+            <field name="name">mrp.settings.form</field>
+            <field name="model">mrp.config.settings</field>
+            <field name="inherit_id" ref="mrp.view_mrp_config" />
+            <field name="arch" type="xml">
+                <xpath expr="//label[@string='Planning']/../div" position="inside">
+                    <div>
+                        <field name="group_mrp_workers" class="oe_inline"/>
+                        <label for="group_mrp_workers"/>
+                    </div>
+                </xpath>
+            </field>
+        </record>
+    
+    </data>
+</openerp>