This 70-year-old truck driver was recently called the ‘Hardest Working Man‘ in America. After doing the math, it’s hard to argue otherwise.

Earlier this year, Ron Kline celebrated a rare milestone — 50 years of driving a truck for the same company. What’s more impressive, he’s done it without taking a single sick day.

Kline works for Mansfield Plumbing out of Ohio, and has done so since 1965. What makes Kline so reliable? Probably the fact that he loves what he does.

The father of 11, and grandfather of 38, says he doesn’t plan on retiring anytime soon. “I’m basically a happy, healthy person which has allowed me to work so long without a sick day.” he told Contractor Magazine.

“I’m very blessed. With 38 grandchildren there are lots of family activities to get involved in, so it keeps me busy. But retirement isn’t even an option … I really enjoy my job and working for Mansfield is a huge part of my life.”

The company is equally pleased with their hard working employee. Teri Reid, a distribution manager at Mansfield, praised their long-time employee. “As a truck driver, Ron is in touch with many of our customers and positively represents our company,” she said.

Over the years, Kline has made working for the company a family affair. Both his son and daughter, as well as his three brothers, have all worked for the company at various points in his career.

Mansfield Plumbing was founded in 1929 and is a major manufacturer of bathware and sanitaryware, with distribution facilities in Ohio and Texas.