Once you are pulled over for a DUI, the most important decision you will need to make is whether or not to submit to a chemical test (usually a Breathalyzer). Refusing to submit to a chemical test means the state will have a weaker case against you to prove a DUI. However, the refusal itself is a civil charge that carries significant fines and a mandatory license suspension that starts immediately, even before a hearing on the merits. Whether you should refuse the chemical test greatly depends on the circumstances of your DUI. Some factors to consider are whether it is your first offense, whether you previously refused a chemical test, whether your livelihood depends on having a driver’s license, or if a criminal conviction would cause you to lose your job. For many people, it makes sense to refuse the chemical test because the civil charge of a refusal is preferable to the criminal charge of a DUI, but that is not always the case. The police can (and often do) still charge you with a DUI even if you refuse – the benefit of refusing is that a DUI case without a known blood alcohol level is harder to prove.