WESTAMPTON, N.J. (CBSNewYork) — Tuesday was a special day for one New Jersey waitress.

At an Applebee’s in Westampton, near Trenton, Katherine Walsh’s coworkers gathered to celebrate her 90th birthday.

Some of her coworkers are one-quarter of her age, CBS2 reported.

“They love her,” manager Sean Gallagher said. “A lot of them think she’s their grandmother, wish that she was their grandmother.”

The great-grandmother said she works five days a week partly because she has to, but mostly because she wants to.

She says she has no plans to retire any time soon.

“I’m part of life, I’m not just sitting there,” Walsh said. “I’m part of living. I’m out every day. I have a purpose. I enjoy it.”

Walsh is the oldest of the company’s 40,000 employees nationwide.