from odoo import models, fields, api class USMNHrContract(models.Model): _inherit = 'hr.contract' mn_w4mn_allowances = fields.Integer(string="MN Allowances") mn_w4mn_additional_wh = fields.Float(string="MN Additional Withholding") mn_w4mn_filing_status = fields.Selection([ ('exempt', 'Exempt'), ('single', 'Single'), ('married', 'Married'), ], string='MN Filing Status')