Magnets all around me

[TSTO]

I recently upgraded from a 3G that was on its last barely functioning legs to a 4S 32GB, and I was wondering something. At work I am constantly near magnets because I work at a retail store and we use the magnets to pull things off the magnetic racks on the floor for customers. I always end up being about 1 ft or less away from one of these magnets and my 4s is in my right pocket constantly, does this damage it? I'm probably paranoid but I don't want my precious $300 device to degrade over time due to working conditions! Any thoughts would be appreciated