diff --git a/addons/l10n_at_hr_payroll_private/__manifest__.py b/addons/l10n_at_hr_payroll_private/__manifest__.py
index 82ade94..ca81b5f 100644
--- a/addons/l10n_at_hr_payroll_private/__manifest__.py
+++ b/addons/l10n_at_hr_payroll_private/__manifest__.py
@@ -1,7 +1,7 @@
 # Part of the odoo-at-payroll project. License: LGPL-3.
 {
     'name': 'Österreich - Privatwirtschaft Personalverrechnung (General-AT)',
-    'version': '19.0.7.0.0',
+    'version': '19.0.8.0.0',
     'author': 'ixsol / gem360',
     'website': 'https://gem360.at',
     'category': 'Human Resources/Payroll',
@@ -111,6 +111,8 @@ gem360-Brücke).
         'views/kv_views.xml',
         'views/bv_views.xml',
         'views/meldewesen_views.xml',
+        'views/vertragsfelder_views.xml',
+        'report/gp8_reports.xml',
         'report/bv_report.xml',
     ],
     'countries': ['at'],
diff --git a/addons/l10n_at_hr_payroll_private/models/__init__.py b/addons/l10n_at_hr_payroll_private/models/__init__.py
index 4a8bbb3..0ae1b18 100644
--- a/addons/l10n_at_hr_payroll_private/models/__init__.py
+++ b/addons/l10n_at_hr_payroll_private/models/__init__.py
@@ -8,4 +8,5 @@ from . import bv_report
 from . import account_chart_private
 from . import account_posting_private
 from . import mbgm
-from . import versichertenmeldung
\ No newline at end of file
+from . import versichertenmeldung
+from . import fristen_private
\ No newline at end of file
diff --git a/addons/l10n_at_hr_payroll_private/models/fristen_private.py b/addons/l10n_at_hr_payroll_private/models/fristen_private.py
new file mode 100644
index 0000000..a0e35a0
--- /dev/null
+++ b/addons/l10n_at_hr_payroll_private/models/fristen_private.py
@@ -0,0 +1,48 @@
+# Part of the odoo-at-payroll project. License: LGPL-3.
+"""GP8-Privat: Verlinkung des Fristenkalenders mit den
+privatwirtschaftlichen GP7-Deklarationen (L16/mBGM-Sprungziele)."""
+from odoo import fields, models
+
+
+class L10nAtPayrollFrist(models.Model):
+    _inherit = 'l10n.at.payroll.frist'
+
+    ref_mbgm_id = fields.Many2one(
+        'l10n.at.payroll.mbgm', string='mBGM-Deklaration',
+        help='Sprungziel für SV-Fristen (Privatmodul — das '
+             'Kernmodell kennt mBGM nicht).')
+
+    def action_zum_objekt(self):
+        """Sprung zur GP7-Deklaration (L16 oder mBGM)."""
+        self.ensure_one()
+        result = super().action_zum_objekt()
+        if result is not True:
+            return result
+        if self.ref_mbgm_id:
+            return {
+                'type': 'ir.actions.act_window',
+                'res_model': 'l10n.at.payroll.mbgm',
+                'res_id': self.ref_mbgm_id.id,
+                'view_mode': 'form',
+            }
+        return True
+
+    def _l10n_at_verlinke_deklarationen(self):
+        """Sprungziele für offene L16- und mBGM-Fristen setzen: neueste
+        Deklaration des Bezugsjahres verlinken, wenn vorhanden."""
+        for frist in self:
+            if frist.fristart in ('l16', 'arbeitsstaette'):
+                l16 = self.env['l10n.at.payroll.l16'].search([
+                    ('company_id', '=', frist.company_id.id),
+                    ('jahr', '=', frist.jahr),
+                ], order='id desc', limit=1)
+                frist.ref_l16_id = l16 or False
+            elif frist.fristart == 'sv_mbgm':
+                mbgm = self.env['l10n.at.payroll.mbgm'].search([
+                    ('company_id', '=', frist.company_id.id),
+                    ('beitragsmonat', '>=',
+                     '%d-%02d-01' % (frist.jahr, frist.monat or 1)),
+                    ('beitragsmonat', '<=',
+                     '%d-%02d-01' % (frist.jahr, frist.monat or 12)),
+                ], order='id desc', limit=1)
+                frist.ref_mbgm_id = mbgm or False
\ No newline at end of file
diff --git a/addons/l10n_at_hr_payroll_private/report/gp8_reports.xml b/addons/l10n_at_hr_payroll_private/report/gp8_reports.xml
new file mode 100644
index 0000000..597d9ee
--- /dev/null
+++ b/addons/l10n_at_hr_payroll_private/report/gp8_reports.xml
@@ -0,0 +1,149 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <!-- ============================================================ -->
+    <!-- GP8: All-in-Deckungsrechnung (QWeb auf hr.payslip) und         -->
+    <!-- DAG-Ausweis (QWeb auf hr.payslip.run).                        -->
+    <!-- ============================================================ -->
+
+    <record id="action_report_allin_deckung" model="ir.actions.report">
+        <field name="name">All-in-Deckungsrechnung (§ 2g AVRAG)</field>
+        <field name="model">hr.payslip</field>
+        <field name="report_type">qweb-pdf</field>
+        <field name="report_name">l10n_at_hr_payroll_private.report_allin_deckung</field>
+        <field name="report_file">l10n_at_hr_payroll_private.report_allin_deckung</field>
+        <field name="paperformat_id" ref="hr_payroll.paperformat_euro_light"/>
+        <field name="binding_model_id" ref="hr_payroll.model_hr_payslip"/>
+        <field name="binding_type">report</field>
+    </record>
+
+    <record id="action_report_dag_ausweis" model="ir.actions.report">
+        <field name="name">DAG-Ausweis (§ 1 DAG)</field>
+        <field name="model">hr.payslip.run</field>
+        <field name="report_type">qweb-pdf</field>
+        <field name="report_name">l10n_at_hr_payroll_private.report_dag_ausweis</field>
+        <field name="report_file">l10n_at_hr_payroll_private.report_dag_ausweis</field>
+        <field name="paperformat_id" ref="hr_payroll.paperformat_euro_light"/>
+        <field name="binding_model_id" ref="hr_payroll.model_hr_payslip_run"/>
+        <field name="binding_type">report</field>
+    </record>
+
+    <!-- All-in-Deckungsrechnung: GP2 `_at_allin_deckung()` als
+         Ausweis — wie viel der Pauschale von welchen Bezügen gedeckt
+         ist; Rest = Über-/Unterdeckung. -->
+    <template id="report_allin_deckung">
+        <t t-call="web.html_container">
+            <t t-foreach="docs" t-as="slip">
+                <t t-call="web.external_layout">
+                    <div class="page">
+                        <h2>All-in-Deckungsrechnung</h2>
+                        <table class="table table-sm">
+                            <tr>
+                                <td><strong>Mitarbeiter:in</strong></td>
+                                <td><t t-out="slip.employee_id.name"/></td>
+                                <td><strong>Periode</strong></td>
+                                <td><t t-out="slip.date_from"/> – <t t-out="slip.date_to"/></td>
+                            </tr>
+                            <tr>
+                                <td><strong>All-in-Pauschale</strong></td>
+                                <td>
+                                    <span t-out="slip.version_id.allin_pauchale"
+                                        t-options='{"widget": "monetary", "display_currency": slip.currency_id}'/>
+                                </td>
+                                <td><strong>Grundlohn (KV)</strong></td>
+                                <td>
+                                    <span t-out="slip.version_id.allin_grundlohn"
+                                        t-options='{"widget": "monetary", "display_currency": slip.currency_id}'/>
+                                </td>
+                            </tr>
+                        </table>
+                        <h3>Bezüge vs. Pauschale</h3>
+                        <table class="table table-sm">
+                            <thead>
+                                <tr>
+                                    <th>Bezug</th>
+                                    <th class="text-end">Betrag</th>
+                                </tr>
+                            </thead>
+                            <tbody>
+                                <tr t-foreach="slip.line_ids.filtered(lambda l: l.total and l.salary_rule_id.l10n_at_bemessung != 'neutral' and l.salary_rule_id.category_id.code == 'ATP_BRUTTO')" t-as="line">
+                                    <td><t t-out="line.name"/></td>
+                                    <td class="text-end">
+                                        <span t-out="line.total" t-options='{"widget": "monetary", "display_currency": slip.currency_id}'/>
+                                    </td>
+                                </tr>
+                            </tbody>
+                        </table>
+                        <t t-set="deckung" t-value="slip._at_allin_deckung()"/>
+                        <t t-if="deckung and deckung.get('rest') is not None">
+                            <p class="h4 text-end">
+                                <strong>Rest:</strong>
+                                <span t-out="deckung['rest']"
+                                    t-options='{"widget": "monetary", "display_currency": slip.currency_id}'/>
+                                <t t-if="deckung['rest'] > 0">
+                                    <span class="text-warning">(Überdeckung — Pauschale übersteigt die Bezüge)</span>
+                                </t>
+                                <t t-if="deckung['rest'] &lt; 0">
+                                    <span class="text-danger">(Unterdeckung — Bezüge übersteigen die Pauschale)</span>
+                                </t>
+                            </p>
+                        </t>
+                    </div>
+                </t>
+            </t>
+        </t>
+    </template>
+
+    <!-- DAG-Ausweis: § 1 DAG je Monat — Lohnsumme der Geringfügigen,
+         Schwelle, Abgabe. -->
+    <template id="report_dag_ausweis">
+        <t t-call="web.html_container">
+            <t t-foreach="docs" t-as="run">
+                <t t-call="web.external_layout">
+                    <div class="page">
+                        <h2>DAG-Ausweis (§ 1 DAG) — <t t-out="run.name"/></h2>
+                        <t t-set="dag" t-value="run.company_id._l10n_at_dag(run.slip_ids[:1].date_from if run.slip_ids else None)"/>
+                        <table class="table table-sm">
+                            <thead>
+                                <tr>
+                                    <th>Kennzahl</th>
+                                    <th class="text-end">Wert</th>
+                                </tr>
+                            </thead>
+                            <tbody>
+                                <tr>
+                                    <td>Anzahl geringfügig Beschäftigte</td>
+                                    <td class="text-end"><t t-out="dag and dag.get('anzahl', 0) or 0"/></td>
+                                </tr>
+                                <tr>
+                                    <td>Lohnsumme (ohne SZ)</td>
+                                    <td class="text-end">
+                                        <span t-out="dag and dag.get('lohnsumme', 0.0) or 0.0"
+                                            t-options='{"widget": "monetary", "display_currency": run.company_id.currency_id}'/>
+                                    </td>
+                                </tr>
+                                <tr>
+                                    <td>Schwelle (1,5 × GFG)</td>
+                                    <td class="text-end">
+                                        <span t-out="dag and dag.get('schwelle', 0.0) or 0.0"
+                                            t-options='{"widget": "monetary", "display_currency": run.company_id.currency_id}'/>
+                                    </td>
+                                </tr>
+                                <tr>
+                                    <td><strong>Dienstgeberabgabe (19,4 %)</strong></td>
+                                    <td class="text-end">
+                                        <strong><span t-out="dag and dag.get('abgabe', 0.0) or 0.0"
+                                            t-options='{"widget": "monetary", "display_currency": run.company_id.currency_id}'/></strong>
+                                    </td>
+                                </tr>
+                            </tbody>
+                        </table>
+                        <p class="small text-muted">
+                            Voraussetzungen: mindestens 2 geringfügig Beschäftigte
+                            und Lohnsumme über der Schwelle (1,5 × GFG).
+                        </p>
+                    </div>
+                </t>
+            </t>
+        </t>
+    </template>
+</odoo>
\ No newline at end of file
diff --git a/addons/l10n_at_hr_payroll_private/views/vertragsfelder_views.xml b/addons/l10n_at_hr_payroll_private/views/vertragsfelder_views.xml
new file mode 100644
index 0000000..8fcd402
--- /dev/null
+++ b/addons/l10n_at_hr_payroll_private/views/vertragsfelder_views.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <!-- ============================================================ -->
+    <!-- GP8: UI der GP4-Vertragsstichtage + GP5/GP6-Felder am          -->
+    <!-- Mitarbeiterformular (Payroll-Gruppe, Muster KV-Einstufung).    -->
+    <!-- ============================================================ -->
+    <record id="hr_employee_view_form_stichtage" model="ir.ui.view">
+        <field name="name">hr.employee.form.l10n_at_stichtage</field>
+        <field name="model">hr.employee</field>
+        <field name="inherit_id"
+            ref="l10n_at_hr_payroll_private.payroll_hr_employee_view_form_bv"/>
+        <field name="arch" type="xml">
+            <group name="bv_einstufung" position="after">
+                <group name="stichtage" string="SV-Stichtage &amp; Status (GP4)"
+                    groups="hr_payroll.group_hr_payroll_user">
+                    <group string="Satzausschaltungen">
+                        <field name="l10n_at_alv_entfall_ab"/>
+                        <field name="l10n_at_uv_entfall_ab"/>
+                        <field name="l10n_at_pv_bonusphase_ab"/>
+                        <field name="l10n_at_lnkp_frei_ab"/>
+                    </group>
+                    <group string="Status &amp; Abrechnung">
+                        <field name="l10n_at_lehrling"/>
+                        <field name="l10n_at_fallweise"/>
+                        <field name="l10n_at_familienabsetzbetrag"/>
+                        <field name="l10n_at_ueberw_nachtarbeit"/>
+                    </group>
+                </group>
+            </group>
+        </field>
+    </record>
+</odoo>
\ No newline at end of file