hr_contract_security/security/ir_module_category_data.xml
<?xml version="1.0" ?>
<openerp>
<data>
<record id="module_hr_contract" model="ir.module.category">
<field name="name">Employee Contract Operation</field>
</record>
<record id="module_hr_contract_viewer" model="ir.module.category">
<field name="name">Employee Contract Viewer</field>
</record>
</data>
</openerp>