Jim Clements got fed up with retirement when he was 66 and decided to get a job.
He's now 100 and is still working as a part-time temp at a security company in Harlow.
He does office work, makes the tea and says he has no plans to give up work.
We'll have more on Jim later in the day.
More top news
Showers this evening, dying out overnight.
The Bishop of Norwich has called for unity and calm in the wake of the referendum vote to leave the European Union.
Showers becoming heavy this afternoon, with thunder possible.