At 100 years old, Miriam Todd works more hours than many people a fraction of her age. She’s in her office at her family’s furniture store six days a week, for at least 50 hours total. The job involves bookkeeping, helping customers and making sure things run smoothly at the Stratford, New Jersey, business her parents founded in 1929.

“I can’t say I’m working when I enjoy what I’m doing, so I feel guilty if I say I’m working,” Todd, a great-great grandmother, tells TODAY.com. “It’s not for everybody, but it works well for me.

My mother was the same way. In fact, she died here in the office, sitting here doing her work. She was past 80 and she died sitting at her desk.

So I said if that’s God’s will for my life, so be it.” Born on June 11, 1924, Todd says she has no plans to retire. She runs the store with her son and grandchildren.

She began working at Nehlig’s Furniture — founded by her mother and father, Philip and Ethyl Nehlig — for a few years in the 1940s before she got married. Then, she was a stay-at-home mother until 1975. She’s been back on the job ever since, but understands many people can’t wait to retire in their 60s or earlier.

“If that’s what they enjoy,” Todd says. “My husband was forced to retire because of his health, and he enjoyed every minute of it. He loved it.

I would not be happy being at home full time.” Todd was married for 51 years before her husband passed away in 1995. Todd still drives a car, does all.