If you are claiming because of illness, the policy may pay out when you are too sick to do your job or specify that you need to be too sick to do any job.
The policy may not start to pay out until you have been ill or jobless for two weeks or more.
The cover usually lasts a year but could be less.
Make sure you know whether the PPI covers the entire balance of what you owe or just a percentage.
Some credit issuers may automatically add payment protection. Check your account and ask for it to be removed if you do not need it.