diff --git a/sale_order_batch/README.rst b/sale_order_batch/README.rst
index 4eb7562..0a5db41 100644
--- a/sale_order_batch/README.rst
+++ b/sale_order_batch/README.rst
@@ -35,6 +35,7 @@ Changelog
 =========
 
 :0.0.1: Initial module.
+:1.0.0: Add Multi Company ability
 
 Bug Tracker
 ===========
diff --git a/sale_order_batch/__manifest__.py b/sale_order_batch/__manifest__.py
index b88156b..a169d71 100644
--- a/sale_order_batch/__manifest__.py
+++ b/sale_order_batch/__manifest__.py
@@ -13,6 +13,7 @@
         "views/sale_order_views.xml",
         "views/sale_menus.xml",
         "security/ir.model.access.csv",
+        "security/ir_rules.xml",
     ],
     "license": "LGPL-3",
 }
diff --git a/sale_order_batch/models/sale_order.py b/sale_order_batch/models/sale_order.py
index 1fdf8bc..aef654c 100644
--- a/sale_order_batch/models/sale_order.py
+++ b/sale_order_batch/models/sale_order.py
@@ -5,13 +5,16 @@ from odoo.exceptions import UserError
 class SaleOrder(models.Model):
     _inherit = "sale.order"
 
-    batch_id = fields.Many2one("sale.order.batch", copy=False)
+    batch_id = fields.Many2one("sale.order.batch", copy=False, check_company=True)
 
     def action_add_to_batch(self):
         """
         TODO: Add Wizard to choose between batches if more than one existis. Picking the first one for now.
         """
-        batch = self.env["sale.order.batch"].search([("state", "=", "open")], limit=1)
+        self = self.with_company(self.company_id)
+        batch = self.env["sale.order.batch"].search(
+            [("state", "=", "open"), ("company_id", "=", self.company_id.id)], limit=1
+        )
         if not batch:
             batch = self.env["sale.order.batch"].create({})
         for sale_order in self:
diff --git a/sale_order_batch/models/sale_order_batch.py b/sale_order_batch/models/sale_order_batch.py
index 1bea44b..c374447 100644
--- a/sale_order_batch/models/sale_order_batch.py
+++ b/sale_order_batch/models/sale_order_batch.py
@@ -11,11 +11,7 @@ class SaleOrderBatch(models.Model):
     _description = "Sale Order Batch"
     _inherit = "mail.thread"
     _order = "date_order desc, id desc"
-
-    # TODO: add company_id to sale order batch
-    # company_id = fields.Many2one(
-    #     related='order_id.company_id',
-    #     store=True, index=True, precompute=True)
+    _check_company_auto = True
 
     name = fields.Char(
         string="Order Batch Reference",
@@ -25,6 +21,9 @@ class SaleOrderBatch(models.Model):
         index="trigram",
         default=lambda self: _("New"),
     )
+    company_id = fields.Many2one(
+        comodel_name="res.company", required=True, index=True, default=lambda self: self.env.company
+    )
     state = fields.Selection(
         selection=[("open", "Open"), ("closed", "Closed")],
         string="Status",
diff --git a/sale_order_batch/readme/HISTORY.rst b/sale_order_batch/readme/HISTORY.rst
index e986fe7..7322126 100644
--- a/sale_order_batch/readme/HISTORY.rst
+++ b/sale_order_batch/readme/HISTORY.rst
@@ -1 +1,2 @@
-:0.0.1: Initial module.
\ No newline at end of file
+:0.0.1: Initial module.
+:1.0.0: Add Multi Company ability
\ No newline at end of file
diff --git a/sale_order_batch/security/ir_rules.xml b/sale_order_batch/security/ir_rules.xml
new file mode 100644
index 0000000..7abb22e
--- /dev/null
+++ b/sale_order_batch/security/ir_rules.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo noupdate="1">
+
+    <!-- Multi - Company Rules -->
+    <record id="sale_order_batch_comp_rule" model="ir.rule">
+        <field name="name">Sales Order Batch multi-company</field>
+        <field name="model_id" ref="model_sale_order_batch"/>
+        <field name="domain_force">[('company_id', 'in', company_ids)]</field>
+    </record>
+
+</odoo>
diff --git a/sale_order_batch/static/description/index.html b/sale_order_batch/static/description/index.html
index 79ce309..6404dbf 100644
--- a/sale_order_batch/static/description/index.html
+++ b/sale_order_batch/static/description/index.html
@@ -394,6 +394,8 @@ anymore as log as they are part of a batch. Only Sale Orders in state Qutotation
 <tbody valign="top">
 <tr class="field"><th class="field-name">0.0.1:</th><td class="field-body">Initial module.</td>
 </tr>
+<tr class="field"><th class="field-name">1.0.0:</th><td class="field-body">Add Multi Company ability</td>
+</tr>
 </tbody>
 </table>
 </div>