Wade has worked at the retail giant for more than 30 years, greeting customers and working the cash register.
"I like to meet the people, and being here, I get to talk to a lot of people," he told Today. "I like being occupied. I usually keep very busy, one thing or another. They see to it that I do."
Wade, who has an 80-year-old son, has lived in Winfield, Kansas, most of his life, and on Saturday, his friends, family and co-workers threw him a party.
He attempted retirement in his 60s, but it didn't last long. He got bored and quickly applied for a job.
"I appreciate getting to be old and being recognized, but like I say, I'm still just a normal human being," he said. "I just happen to have been lucky enough to still be here."
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Wade is also a veteran, having served for the United States Air Force during WWII.
In honor of his birthday and his military service, Walmart donated $125,000 to the Friends of the National World War II Memorial.