It’s unclear and you’d need a lot more data to draw any kind of conclusions - not just the rate in the general population (for the age group) as well as those working similar jobs. It would be unusual to find a lot of strokes in working age people but a friend of mine had one at work.kn her late 40s (but she had a genetic predisposition - her father died at the same age from a heart attack).
The suggestion has been that the working conditions in Amazon factories is especially brutal because the packers are standing for such long periods of time with few breaks and have high targets they need to hit leading to considerable stress. The TUC have a page on working conditions at fulfilment centres.