Senior Citizen forced to work?

Sometimes I go grocery shopping with my family and I noticed this old lady at the cash register. I have seen this old lady before working there, but this time it just struck me as odd. I'm not sure how long she has been working at this particular store, maybe a year. That day, that moment just got stuck in my head. The time was around 6pm.

Here she was, and I was next in line, but she was talking to a person ahead of us. Apparently it was a co-worker and they we're talking about work and what time she was getting off. She must hate doing this work because she told him that she would pop a few pills on before the drive home. So, by the time she would get home, the pills would kick in and make her fall asleep. Then, she adds that she wakes up at 5am to start the work day all over again.

Did she not save enough money to retire comfortably? Was there no retirement income for her? What did she do with all the money she make? What about her spouse? 

I truly hope for a lot of us, that we can stop working at a point and just relax by having passive income or retirement savings we have built. Save to preserve your capital and invest to build wealth, no matter how small.