The Importance of an Experience Letter
Getting an experience letter is a professional right for everyone, irrespective of levels or designations. Your appointment letter entails the details of the terms and conditions of your association with the organization. It acts as a contract between two parties, i.e., employer and employee. This contract requires both parties to fulfill all the terms and conditions, such as serving a notice period of 90 days or providing a salary in lieu, which is a standard case in appointment letters. In your situation, both parties are required to serve the 90-day notice period. You have worked there for 20 months, drawn a salary, and fulfilled your responsibilities. Merely not signing the appointment letter doesn't mean you haven't accepted the terms and conditions. The contract is considered fully executed, as evidenced by the salary deposited in your account.
Notice Period and Settlement
In your case, the notice period is 45 days. The remaining notice period amount must be settled in full and final settlement, and you must hand over the requisite items in your possession. Only then are you entitled to your professional right to an experience letter. If the employer is unwilling to issue an experience letter, you can initiate legal action to fulfill the terms of your association with them.
Professional Conduct
Lastly, always have a clear understanding of the association; the organization also has its commitments toward its stakeholders. Let's conduct ourselves in professional ways.
Hope this is useful.
Regards, Amol