Depressed at the age of 59

Dear friends, I hope someone can help me. My husband is 59 years old, since 2 months he has been worrying unnecessarily and that had cause him some heart burn feeling 2 weeks ago. He was admitted in hospital and was diagnosed with stable angina and gastritis.
He worries that me and the kids will abandon him. Currently, he works on contract basis as a ERT leader and his contract is finishing end of next year. Now he is worried the job is not continued what will happen to him. I have given him much motivation and hopes to help him come out of this depression. Can someone help my husband please...email me at : kaliammah@yahoo.com