icehrm/ext/admin/overtime/api/OvertimeActionManager.php

<?php
class OvertimeActionManager extends ApproveAdminActionManager{

    public function getModelClass(){
        return "EmployeeOvertime";
    }

    public function getItemName(){
        return "Overtime Request";
    }

    public function getModuleName(){
        return "Overtime Management";
    }

    public function getModuleTabUrl(){
        return "g=modules&n=overtime&m=module_Time_Management#tabEmployeeOvertime";
    }

    public function getModuleSubordinateTabUrl(){
        return "g=modules&n=overtime&m=module_Time_Management#tabSubordinateEmployeeOvertime";
    }

    public function getModuleApprovalTabUrl(){
        return "g=modules&n=overtime&m=module_Time_Management#tabEmployeeOvertimeApproval";
    }
}