Well, the best benefit is that I am in Southern California. Weather is great but a car-centric environment and thus not many bike commuters. With that I have experienced various ways the employer deals with commuters. From nothing but a bathroom to clean-up in to a caged bike area that is opened with the door key card. The last place, I would park outside in view of security. They also had showers and lockers. I think it was more for the folks that would play basketball across the street.
In Los Angeles you would think more people would ‘cycle due to nice weather and get out of traffic. But there isn’t much incentives from employers so bike commuting tends to be rare.