Employees are more likely to quit than get made redundant. Therefore it would seem that employers are more disposable than employees. You can't quit a job for another job with a higher salary and then moan about being made redundant.
Generally I think you hope for the best and plan for the worst. If you're a good employee then employers won't want to lose you. If you're not then what do you expect? You wouldn't stay with a shitty job.