diff --git a/addons/hr_timesheet/security/hr_timesheet_security.xml b/addons/hr_timesheet/security/hr_timesheet_security.xml
index d4fd4902c46..2b20fc60087 100644
--- a/addons/hr_timesheet/security/hr_timesheet_security.xml
+++ b/addons/hr_timesheet/security/hr_timesheet_security.xml
@@ -30,6 +30,24 @@
             <field name="groups_id" eval="[(4,ref('group_timesheet_manager'))]"/>
         </record>
 
+        <record id="timesheet_line_rule_portal_user" model="ir.rule">
+            <field name="name">account.analytic.line.timesheet.portal.user</field>
+            <field name="model_id" ref="analytic.model_account_analytic_line"/>
+            <field name="domain_force">[
+                ('project_id', '!=', False),
+                '|',
+                    ('project_id.message_partner_ids', 'child_of', [user.partner_id.commercial_partner_id.id]),
+                    ('task_id.message_partner_ids', 'child_of', [user.partner_id.commercial_partner_id.id]),
+                ('project_id.privacy_visibility', '=', 'portal'),
+                ('project_id.project_sharing_access_ids.user_id', 'in', [user.id]),
+            ]</field>
+            <field name="perm_read" eval="True"/>
+            <field name="perm_write" eval="True"/>
+            <field name="perm_create" eval="True"/>
+            <field name="perm_unlink" eval="True"/>
+            <field name="groups" eval="[(4, ref('base.group_portal'))]"/>
+        </record>
+
         <record id="timesheet_line_rule_user" model="ir.rule">
             <field name="name">account.analytic.line.timesheet.user</field>
             <field name="model_id" ref="analytic.model_account_analytic_line"/>
diff --git a/addons/hr_timesheet/security/ir.model.access.csv b/addons/hr_timesheet/security/ir.model.access.csv
index db5329a5262..ccddcb13a5d 100644
--- a/addons/hr_timesheet/security/ir.model.access.csv
+++ b/addons/hr_timesheet/security/ir.model.access.csv
@@ -1,4 +1,5 @@
 id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_account_analytic_line_portal_user,analytic.account.analytic.line.timesheet.portal.user,analytic.model_account_analytic_line,base.group_portal,1,0,0,0
 access_account_analytic_line_user,analytic.account.analytic.line.timesheet.user,analytic.model_account_analytic_line,hr_timesheet.group_hr_timesheet_user,1,1,1,1
 access_account_analytic_user,analytic.account.analytic.timesheet.user,analytic.model_account_analytic_account,hr_timesheet.group_hr_timesheet_user,1,1,0,0
 access_uom_uom_hr_timesheet,uom.uom.timesheet.user,uom.model_uom_uom,hr_timesheet.group_hr_timesheet_user,1,0,0,0