Labor Code 206 and 206.5 require an employer to pay an employee all wages the employer concedes are due without condition and without any release of the employee’s disputed claims, if any, to other wages. Here, the employer conceded it owed plaintiff a bonus, but before paying it sent the plaintiff a 998 offer to settle all wage claims. Held, the 998 offer was invalid and did not shift costs when the plaintiff recovered less than the amount of the offer at trial. Had the employer first paid the undisputed wages and then made a 998 offer for the disputed wage claims, the result would have been different.