oca-technical/odoo-bringout-oca-hack-payroll/payroll/data/hr_payroll_data.xml

<?xml version="1.0" encoding="utf-8" ?>
<odoo>
    <data noupdate="1">
        <!-- Decimal Precision -->
        <record forcecreate="True" id="decimal_payroll_amount" model="decimal.precision">
            <!-- Decimal Precision Amount -->
            <field name="name">Payroll Amount</field>
            <field name="digits">4</field>
        </record>
        <record forcecreate="True" id="decimal_payroll" model="decimal.precision">
            <!-- Decimal Precision Total -->
            <field name="name">Payroll</field>
            <field name="digits">2</field>
        </record>
        <record forcecreate="True" id="decimal_payroll_rate" model="decimal.precision">
            <field name="name">Payroll Rate</field>
            <field name="digits">4</field>
        </record>
    </data>
</odoo>