A dedicated pensioner is Britain’s longest serving employee who has worked for the same firm for 70 YEARS. Monica Evans, 89, took the bus for her first day as an accounts clerk for an engineering firm when she was just 19. Incredibly, Monica has remained at the same engineering firm her entire working life and on Friday (28/4) celebrates the 70th anniversary of her first day. She now works for the great-granddaughter of her first boss at Kigass Aero Components Ltd and has no plans to hang up her calculator, still doing the books three days a week. During her career at the Warwick-based firm, she has filled out roughly 42,000 payments forms, only ever failing to account for a 2p deficit back in 1959. Monica, who currently works for the great-granddaughter of her first boss, moved to the company after working for the British Iron and Steel Control in Leamington Spa, Warks. To mark her milestone, Monica received a letter of congratulations from the Queen, and the Guinness Book of World Records are currently verifying her status as the UK's longest serving employee. Monica, who had no children but was married to husband Kenneth for 50 years before he died in 2008, started on a weekly salary of 12 shillings and six pence.