l10n_br_hr_payroll/view/hr_payroll_view.xml
<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>
<record model="ir.ui.view" id="view_l10n_hr_payroll_inherit_payslip_form">
<field name="name">l10n_br_hr_payroll.inherit.payslip.form</field>
<field name="model">hr.payslip</field>
<field name="inherit_id" ref="hr_payroll.view_hr_payslip_form"/>
<field name="arch" type="xml">
<field name="date_to" position="attributes">
<attribute name="on_change">onchange_employee_id(date_from, date_to, employee_id, contract_id)</attribute>
</field>
</field>
</record>
</data>
</openerp>