IMP Allow FICA Exemption (e.g. for F1 Student Visa)

Additionally, improve requirements on `hr_workers_comp_payroll`

hr_workers_comp_payroll/__manifest__.py

@@ -4,7 +4,7 @@
     'license': 'AGPL-3',
     'category': 'Human Resources',
     'depends': [
-        'hr_contract',
+        'hr_payroll',
         'hr_workers_comp',
     ],
     'version': '11.0.0.0.0',

l10n_us_hr_payroll/__manifest__.py

@@ -5,7 +5,7 @@
     'license': 'AGPL-3',
     'category': 'Localization',
     'depends': ['hr_payroll'],
-    'version': '11.0.2017.0.0',
+    'version': '11.0.2018.1.0',
     'description': """
 USA Payroll Rules.
 ==================

l10n_us_hr_payroll/data/rules_2018.xml

@@ -10,7 +10,7 @@
         <field name="name">FICA Employee Social Security Wages (2018)</field>
         <field name="code">FICA_EMP_SS_WAGES_2018</field>
         <field name="condition_select">python</field>
-        <field name="condition_python">result = (payslip.date_to[:4] == '2018')</field>
+        <field name="condition_python">result = (payslip.date_to[:4] == '2018') and not contract.fica_exempt</field>
         <field name="amount_select">code</field>
         <field name="amount_python_compute">
 ###
@@ -32,7 +32,7 @@ else:
         <field name="name">FICA Employee Medicare Wages (2018)</field>
         <field name="code">FICA_EMP_M_WAGES_2018</field>
         <field name="condition_select">python</field>
-        <field name="condition_python">result = (payslip.date_to[:4] == '2018')</field>
+        <field name="condition_python">result = (payslip.date_to[:4] == '2018') and not contract.fica_exempt</field>
         <field name="amount_select">code</field>
         <field name="amount_python_compute">result = categories.GROSS</field>
         <field name="appears_on_payslip" eval="False"/>
@@ -43,7 +43,7 @@ else:
         <field name="name">FICA Employee Medicare Additional Wages (2018)</field>
         <field name="code">FICA_EMP_M_ADD_WAGES_2018</field>
         <field name="condition_select">python</field>
-        <field name="condition_python">result = (payslip.date_to[:4] == '2018')</field>
+        <field name="condition_python">result = (payslip.date_to[:4] == '2018') and not contract.fica_exempt</field>
         <field name="amount_select">code</field>
         <field name="amount_python_compute">
 ###

l10n_us_hr_payroll/l10n_us_hr_payroll.py

@@ -26,6 +26,8 @@ class USHrContract(models.Model):
 
     external_wages = fields.Float(string='External Existing Wages', default=0.0)
 
+    fica_exempt = fields.Boolean(string='FICA Exempt', help="Exempt from Social Security and "
+                                                            "Medicare e.g. F1 Student Visa")
     futa_type = fields.Selection([
         (FUTA_TYPE_EXEMPT, 'Exempt (0%)'),
         (FUTA_TYPE_NORMAL, 'Normal Net Rate (0.6%)'),

l10n_us_hr_payroll/l10n_us_hr_payroll_view.xml

@@ -20,6 +20,7 @@
                             <group string="Other" name="other">
                                 <field name="external_wages" string="External YTD Wages"/>
                                 <field name="futa_type" string="Unemployment Tax Type (FUTA)"/>
+                                <field name="fica_exempt"/>
                             </group>
                         </group>
                     </page>

l10n_us_hr_payroll/tests/test_us_payslip_2018.py

@@ -342,3 +342,27 @@ class TestUsPayslip2018(TestUsPayslip):
         if 'FED_INC_WITHHOLD' in cats:
             fed_inc_withhold = cats['FED_INC_WITHHOLD']
         self.assertPayrollEqual(fed_inc_withhold, 0.0)
+
+    def test_2018_taxes_with_fica_exempt(self):
+        salary = 6000.0
+        schedule_pay = 'bi-weekly'
+        w4_allowances = 2
+        employee = self._createEmployee()
+        contract = self._createContract(employee, salary, schedule_pay, w4_allowances)
+        contract.fica_exempt = True
+
+        self._log('2018 tax w4 exempt payslip:')
+        payslip = self._createPayslip(employee, '2018-01-01', '2018-01-31')
+
+        payslip.compute_sheet()
+
+        cats = self._getCategories(payslip)
+
+        ss_wages = cats.get('FICA_EMP_SS_WAGES', 0.0)
+        med_wages = cats.get('FICA_EMP_M_WAGES', 0.0)
+        ss = cats.get('FICA_EMP_SS', 0.0)
+        med = cats.get('FICA_EMP_M', 0.0)
+        self.assertPayrollEqual(ss_wages, 0.0)
+        self.assertPayrollEqual(med_wages, 0.0)
+        self.assertPayrollEqual(ss, 0.0)
+        self.assertPayrollEqual(med, 0.0)