Successful lawsuits based on reference letters extremely rare

It’s a very mixed up world when it comes to employers and references.

Reference letter can mean more than pay

Sometimes, having a legal claim against your employer does not necessarily mean it is wise to enforce it.

THERE IS NO LAW REQUIRING AN EMPLOYEE TO WRITE A REFERENCE LETTER

QUESTION:   Recently I have been to a few job interviews where I have been asked for a written reference from my former employer.  That employer will not even give me a letter confirming what I did, how long I worked there and what my salary was.  Is there any law requiring them to give me a letter of reference?