from openerp import models, fields, api, _

class check_model(models.Model):

_inherit="res.partner"

checkk=fields.Boolean('check')

----------------------------

<?xml version="1.0" encoding="UTF-8"?>

<openerp>

<data>

<record model="ir.ui.view" id="check_form_view1234">

<field name="name">Contrac</field>

<field name="model">res.partner</field>

<field name="inherit_id" ref="base.view_partner_form" />

<field name="arch" type="xml">

<xpath expr="//div[@class='oe_title oe_left']/field[@name='category_id']" position="after">

<field name="checkk"/>

<label for="checkk"/>

</xpath>

</field>

</record>

<act_window name="contract Employee" res_model="res.partner" id="check_employee_action"/>

<menuitem name="check" id="check_employee_id" parent="attendance_root_sub_menu" action="check_employee_action">

</menuitem>

</data>

</openerp>

can you post the exact error here