Many workplaces have a no weapons policy. The first thing to realize is that this is a "policy" not a law. They have the right to discipline you for bringing a firearm to work (up to and including firing you) but it is not necessarily against the law (assuming you have a concealed weapons permit, don't work in a place where firearms are prohibited by law: federal buildings, schools, etc. )

Your workplace is responsible for your safety, but only to the point where they have taken "reasonable" precautions. Key cards, unarmed security, and parking permits are pretty much the limit for the average workplace. These measures are usually sufficient to deter the casually interested but not the truly motivated. It will keep the disgruntled customers out of the lobby, but it won't do much against the crazy stalkers and disgruntled current employees.

Alternatives to carrying concealed weapons at work:

1. Other self-defense tools/equipment. While no other piece of equipment is going to completely fill the role of a handgun, pepper spray, knives, and collapsible batons are also options. Make sure that your defensive weapons comply with the local laws.

2. Don't work there. If you believe that there is a credible threat to your life a paycheck isn't much compensation. If you can work from home (even at least part time) this might be a good compromise.

3. Develop your escape strategy. Determine how you are going to get out of your workplace if something bad happens. Consider alternate methods and times to get to and from work.

4. Utilize all security measures provided by the corporation. Many workplaces offer a security guard escort to your car, etc. Take them up on it.

How to carry concealed weapons in violation of corporate policy (should you choose to do so):

1. Concealed means concealed. Don't discuss, demonstrate or display your firearm. You don't need to fiddle with it at work, so do your readiness condition checks at home. The corporation is worried about accidents, that is why they made the policy in the first place. You need to be more responsible than they are expecting.

2. Secure means secure. If you leave your pistol in your car, will your car be broken into? Can you keep it in a locked briefcase under your desk? Can you keep it in a purse or backpack in a secure location? Carried on your person is the most secure, but increases your chances of discovery if you are not very careful.

3. Consider the situations where you believe you might need to use your firearm. Recognize that if you draw a pistol at work you have probably just resigned. If you do this inappropriately you will be "pursuing other opportunities" such as making license plates.

Self Defense should not be an exercise in ego. The purpose is not to impress or intimidate your peers or coworkers, but to provide for your safety. Generally nobody needs to know what you have, why you have it, or where you keep it.