from odoo import models, fields, api class USWAHrContract(models.Model): _inherit = 'hr.contract' wa_lni = fields.Many2one('hr.contract.lni.wa', string='WA State LNI') class WALNI(models.Model): _name = 'hr.contract.lni.wa' name = fields.Char(string='Name') rate = fields.Float(string='Rate (per hour worked)', digits=(7, 6)) rate_emp_withhold = fields.Float(string='Employee Payroll Deduction Rate (per hour worked)', digits=(7, 6))