Her son, Terry Mebane, offered another explanation.
His mother enjoyed talking with people.
That might sound like a small thing, but over the course of a lifetime it became central to her relationship with work.
For Melba, Dillard's wasn't merely the building where she earned a salary.
Her son described the store as a "second life" for his mother and for him.
Melba raised Terry as a working single mother. While she spent long hours at the store, he grew up around the people who worked there.
Terry later remembered occasionally coming to the store after dinner, spending time around the mall and then riding home with his mother when she finished her shift.
The boundaries between workplace and community gradually blurred.
Coworkers became friends.
Customers became familiar faces.
And the Dillard family itself became part of Melba's extended professional world.
A Connection That Spanned Generations
Melba's long tenure meant that she didn't simply know one generation of the Dillard family.
She watched younger members grow up.
When company founder William T. Dillard visited the store with his children, Melba sometimes helped look after his daughter, Drue Dillard Matheny.
Melba remembered taking the young girl for popcorn or walking around and looking at store windows.
Decades later, Matheny had become an executive vice president of the company.
The child Melba once helped entertain was now standing at Melba's retirement celebration.
By then, the two had known each other for roughly 65 years.
Few workplace relationships last that long.
At Melba's retirement celebration, Matheny praised not merely her longevity but the spirit she brought to her work.
She described Melba as upbeat, generous toward her community and exceptionally talented with people.
Those qualities help explain why Melba became far more than another name on an employee roster.
She became part of the store's institutional memory.
The Routine Behind 74 Years of Work
Longevity on this scale isn't created by one dramatic act.
It is created through thousands of ordinary mornings.
For decades, Melba maintained a remarkably consistent routine.
NBC/CNBC reported that she would wake around 6 a.m., make coffee and prepare breakfast—often sausage and biscuits.
She would take care of errands before work and arrive early.
The store might not yet have been open to customers, but Melba liked getting there around 9 a.m., in part so she could secure the parking spot she preferred.
Then the workday began.
This happened again and again.
Monday after Monday.
Season after season.
Year after year.
She typically worked at least 40 hours per week for much of her career, according to the same account.
That means Melba's extraordinary story wasn't really made of one 74-year commitment.
It was made of countless smaller commitments.
Getting out of bed.
Getting dressed.
Driving to work.
Greeting coworkers.
Helping customers.
Going home.