diff --git a/addons/hr_timesheet/models/hr_timesheet.py b/addons/hr_timesheet/models/hr_timesheet.py
index 85d5973f751..4a54dea4f3f 100644
--- a/addons/hr_timesheet/models/hr_timesheet.py
+++ b/addons/hr_timesheet/models/hr_timesheet.py
@@ -121,16 +121,19 @@ class AccountAnalyticLine(models.Model):
 
         # Although this make a second loop on the vals, we need to wait the preprocess as it could change the company_id in the vals
         # TODO To be refactored in master
-        company_ids_in_vals = list({vals['company_id'] for vals in vals_list if vals.get('company_id', False)})
-        employees = self.env['hr.employee'].with_context(active_test=False).search([('user_id', 'in', user_ids), ('company_id', 'in', [self.env.company.id] + company_ids_in_vals)])
-        user_map = defaultdict(dict)
+        employees = self.env['hr.employee'].sudo().with_context(active_test=False).search([('user_id', 'in', user_ids)])
+        employee_for_user_company = defaultdict(dict)
         for employee in employees:
-            user_map[employee.company_id.id][employee.user_id.id] = employee.id
+            employee_for_user_company[employee.user_id.id][employee.company_id.id] = employee.id
 
         for vals in vals_list:
             # compute employee only for timesheet lines, makes no sense for other lines
             if not vals.get('employee_id') and vals.get('project_id'):
-                vals['employee_id'] = user_map[vals.get('company_id', self.env.company.id)].get(vals.get('user_id', default_user_id), False)
+                employee_for_company = employee_for_user_company.get(vals.get('user_id', default_user_id), False)
+                if not employee_for_company:
+                    continue
+                company_id = list(employee_for_company)[0] if len(employee_for_company) == 1 else vals.get('company_id', self.env.company.id)
+                vals['employee_id'] = employee_for_company.get(company_id, False)
 
         lines = super(AccountAnalyticLine, self).create(vals_list)
         for line, values in zip(lines, vals_list):
diff --git a/addons/hr_timesheet/tests/test_timesheet.py b/addons/hr_timesheet/tests/test_timesheet.py
index 3b4e7cb23ed..a3e3889aa1e 100644
--- a/addons/hr_timesheet/tests/test_timesheet.py
+++ b/addons/hr_timesheet/tests/test_timesheet.py
@@ -349,3 +349,48 @@ class TestTimesheet(TestCommonTimesheet):
         })
 
         self.assertEqual(timesheet.project_id, second_project, 'The project_id of timesheet should be second_project')
+
+    def test_create_timesheet_employee_not_in_company(self):
+        ''' ts.employee_id only if the user has an employee in the company or one employee for all companies.
+        '''
+        company_2 = self.env['res.company'].create({'name': 'Company 2'})
+        company_3 = self.env['res.company'].create({'name': 'Company 3'})
+
+        analytic_account = self.env['account.analytic.account'].create({
+            'name': 'Aa Aa',
+            'company_id': company_3.id,
+        })
+        project = self.env['project.project'].create({
+            'name': 'Aa Project',
+            'company_id': company_3.id,
+            'analytic_account_id': analytic_account.id,
+        })
+        task = self.env['project.task'].create({
+            'name': 'Aa Task',
+            'project_id': project.id,
+        })
+
+        Timesheet = self.env['account.analytic.line'].with_context(allowed_company_ids=[company_3.id, company_2.id, self.env.company.id])
+        timesheet = Timesheet.create({
+            'name': 'Timesheet',
+            'project_id': project.id,
+            'task_id': task.id,
+            'unit_amount': 2,
+            'user_id': self.user_manager.id,
+            'company_id': company_3.id,
+        })
+        self.assertEqual(timesheet.employee_id, self.user_manager.employee_id, 'As there is a unique employee for this user, it must be found')
+
+        self.env['hr.employee'].with_company(company_2).create({
+            'name': 'Employee 2',
+            'user_id': self.user_manager.id,
+        })
+        timesheet = Timesheet.create({
+            'name': 'Timesheet',
+            'project_id': project.id,
+            'task_id': task.id,
+            'unit_amount': 2,
+            'user_id': self.user_manager.id,
+            'company_id': company_3.id,
+        })
+        self.assertFalse(timesheet.employee_id, 'As there are several employees for this user, but none of them in this company, none must be found')