Is there any provision to claim unpaid salaries which are more than one year old?

After one year of leaving work, the worker does not have the right to claim labor entitlements.

Yes, if you are still working with the employer but if you left them and it is more than one year from the day you left, then you can't.

According to the law, you have to collect your salaries for the last year only, more than one year isn’t possible.

But you have to submit your request to the judge, if they don’t refuse the request, maybe they don’t know this idea, you will get those salaries.