I work for a corporation in their Human Resources department. (Keep in mind I'm a graphic designer who manages the internal brand of the company so I'm not one of *THOSE* HR people). But working in their midst for the past 15 years, I do think I have a bit of insight to the minds of HR people. As people have stated earlier, the bottom line is that HR wants to keep the boat from being rocked and avoid litigation. That being said, another of their main functions is health insurance benefits. One of the really big pushes in HR lately is employee wellness (ie: keeping healthcare costs down). If you can appeal to them based both on scientific facts and studies and then tie that in to the insurance cost savings for them for you now being a non-smoker, I think you'll have a better shot. If you can help them see it as a tobacco harm reduction method in the same vein as chantix or nicorette or whatever smoking cessation programs they support, then you'll make a stronger case.
(At least, that's my plan if our company ever decides to implement a non-vaping policy)
That's a great idea! I work for a major corporation and they are always looking for new ways to make employees healthier.
That right there is probably going to be your best arguement to win over HR.