The ongoing management of compensation and benefits is a critical part of effective wage and salary administration. In addition to monitoring costs, how well it is managing the compensation and benefits system. For example, organizations may occasionally need to change their compensation strategies. As described earlier, some organizations pay above- market rates, whereas other organizations pay at or below-market rates. But as organizational circumstances and needs change, it may also be necessary for the organization to change or modify its compensation strategy. Likewise, job evaluation is not a one-time operation. Although job evaluations need not be conducted monthly or even yearly, it is still worthwhile for the organization to periodically reevaluate its jobs to ensure that is has an appropriate worth attached to each job, that job classes are valid, and that the pay structure of the organization is fulfilling its purpose.