Can we change job description and have a current employee re-interview for the job? and can we not hire them if a better candidate is chosen?

Generally all employment in California is presumed to be at will..what that means is that an employer may terminate an employee for any reason (with exceptions), no reason at all and with or without notice. The limitations imposed are that an employer may not terminate an employee for an unlawful motive, i.e., discrimination, pregnancy or such things as retaliation for an employee filing a complaint against the emplooyer for something the employee reasonably believes was an unlawful act on the part of the employer..otherwise you can always terminate for a legitimate business reason but be careful for instance if the terminated employee is over the age of 40  and you terminate and hire someone under the age of 40 the terminated employee may be abnle to claim age discrimination....Stephan Math Esq, smesq1@aol.com