Mental pressure at work place

Sir, I'm writing this on behalf of my husband, who is a banker by profession. We got married in 2016 and were staying in Mumbai where he worked at the head office. He deals with corporate clients. He had to take transfer in Delhi due to health issues in our family. After shifting here we came to know that I've conceived. After 3 months of my pregnancy I had to leave for Kolkata at my parents home as there was no one to take care of me at home. My husband had to tackle everything alone, from cooking and cleaning to traveling 2 hrs to his office 5 days a week (officially) & working at home on weekends too. Now the problem is work culture at his office here. He had informed well ahead that my delivery date is in March. Since it is the financial year end month he thought to inform his boss well ahead of time. I had some health issues as the time for delivery was approaching. Even after knowing all these facts his boss called him to join work immediately. His boss even said that he should leave me as my father will take care since it is his time to make career. Seriously! Was the office work so important than delivery of a child. Still I tried to make up my husband's mind & asked him to leave for work. But only we know how difficult was it for me to go to doc all alone. My stiches were not even healed till that time & my husband had to go. After we came back, now everyday my husband is being insulted for work. Most of the time his boss mails him work after the office hours. His boss seems so mean and anti-family type. Now I'm affraid that my husband is slowly going into depression. And the situation is worse everyday at his office. What shall we do. Kindly suggest. If something happens to him I'll be left all alone with me new born. His boss acts like a devil all the time. Everyday my husband comes home frustrated. I'm really worried about him. This has to stop. Employee harrassment has to stop. Please suggest. TYA