My Daughter’s Husband Lives with Us But Doesn’t Help Pay for Living Expenses

I’m a male public servant in my 60s, and my daughter, her husband and their two children live with my wife and I. My daughter married my now son-in-law, who worked at the same company as her, immediately after she became pregnant with their first child. After she gave birth, our daughter moved in with us, and then her husband moved in. However, our son-in-law has rarely contributed to household expenses. He frequently changes jobs and doesn’t seem to be embarrassed about it.