"I never had a day I didn’t want to go to work," Hansen, of New Jersey, told InsideEdition.com.
Hansen first retired at the age of 65, but it wasn't long before he grew bored of his monotonous routine and returned to the workforce.
At 66, Hansen started working at a family friend’s company, Hutchinson Plumbing, Heating and Cooling in Cherry Hill, as a permit coordinator.
"My father and uncle (who started the company) died in the early 70’s. They were our mentors and it was great to have Bill around to adopt him as new mentor," said Fred Hutchinson, the CEO of Hutchinson Plumbing, Heating and Cooling in Cherry. "He helped drive the same work ethic through the company."
Hansen went on to work at the company for 32 years until retiring again in 2014 at the age of 97.
“We see him frequently — he passes by and visits us and is on the move," Hutchinson told InsideEdition.com. "His birthday was coming up and we asked him what he wanted to do. He was like, 'I want to work for Hutchinson on my birthday.’”
But if Hansen was going to work for the day, he was going to get paid, so the company wrote up an employee agreement that said that Hansen would be compensated $1 for his work.
With payroll out of the way, Hansen returned to the office on Monday — three years after his retirement — and was greeted by cheers.
After signing the agreement, "He got up and was like, 'Well, let’s go to work boys,'" Hutchinson said. "He went to township halls and took out permits. It was very inspiring. He had one hell of a day."
And Hansen was thrilled to be back in the workforce.
"I enjoyed every minute of it and meeting the young people in the borough halls," said Hansen. "I never had a job I didn’t enjoy. I was blessed that way. I’ve been blessed my whole life. My life’s a bowl of cherries."
Hansen is now looking forward to the next milestone.
"I want to have four more years," he said, to see his grandson graduate from high school.