Forced Resignation

I am writing to inform you about my forceful resignation from my position as Assistant Manager at Eternal Ganges Press Pvt Ltd. Sir, this is just to give you an insight; On November 29,2022, I was fell down in the office premises during office hours and suffered with a severe backache due to spinal injury (I consulted with around 10 Doctors & I was advised by all the doctors to undergo surgery and the EG Management (The CEO, HR and The department manager has also forced me to go for the surgery and join the office ASAP), which I did on July 04, 2023. I have submitted all the relevant medical documents to HR , Department manager and to the Management(CEO) in support of my absence. I was on Unpaid sick leave for approximately 2 months to recover from the surgery (as per the doctor's advice). During this time, I was in regular touch with my line manager and kept them updated on my progress. I had also informed them of my plans to return to work from August 01,2023 and i joined the office but as the wound was fresh and I feel pain while longer sittings, I was asked to take rest and come back after only you will perfectly fine . Then i joined the office again on August 21,2023 and again the management said that you should take rest and join only after you will be perfect. I have told him (Mr. Sandip Sengupta -CEO) that it may take time and as per the doctor's advice it will be recovered only if i will get into my daily routine life. After all this happened I have informed my line manager and to Mr. Sengupta about my joining from September 4th September (as my line manager had discussed and brief me about my New/ Restructed KRA on August 22,2023). However, when I reached office after the weekly prayer meeting at HQ on September 4th, I was suddenly asked to resign from my job. I was told that "my position is no longer needed". l could not understand how is it possible because a week ago they(The CEO and Department manager were briefing me about my new responsibilities and now they are saying that my position is no longer needed as the company has no funds to give salary. Am I the only person whom the company is not able to pay the salary??? I am deeply disappointed by this decision. I have been a loyal and hardworking employee for over five (05) years, and I have always gone above and beyond my duties. I am confident that I would have been able to make a full recovery and return to work at full capacity. I believe that this decision is unfair and discriminatory. I have been treated differently from other employees who have taken sick leave for similar reasons. I am also concerned that I have not been paid my salary for the period of my absence.