flectra/addons/sale_timesheet/views/hr_views.xml

<?xml version="1.0" encoding="utf-8"?>
<flectra>
    <record id="hr_timesheet_employee_extd_form" model="ir.ui.view">
        <field name="name">hr.timesheet.employee.extd_form</field>
        <field name="model">hr.employee</field>
        <field name="inherit_id" ref="hr_timesheet.hr_employee_view_form_inherit_timesheet"/>
        <field name="arch" type="xml">
            <xpath expr="//group[@name='timesheet']" position="inside">
                <label for="timesheet_cost"/>
                <div>
                    <field name="timesheet_cost" class="oe_inline"/> per hour
                    <field name="currency_id" invisible="1"/>
                </div>
            </xpath>
            <xpath expr="//group[@name='timesheet']" position="attributes">
                <attribute name="invisible">0</attribute>
            </xpath>
        </field>
    </record>
</flectra>