eiru_payslip_generator/view/payslip_generator.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
	<data>
        <record id="view_eiru_payslip_generator" model="ir.ui.view">
            <field name="name">view.eiru.payslip.generator</field>
            <field name="model">hr.payslip.run</field>
            <field name="inherit_id" ref="hr_payroll.hr_payslip_run_form"/>
            <field name="arch" type="xml">
                <label for="name" position="before">
                    <div class="oe_right oe_button_box eiru-payslip-generator" attrs="{'invisible': [('state','!=','draft')]}"></div>
                </label>
            </field>
        </record>
	</data>
</openerp>