Simply stated, driving on a suspended license is a new, additional crime. In most jurisdictions, these added offenses will carry a mandatory jail sentence, especially if you are a repeat offender or have serious charges pending when you drive while suspended. These sentences can be very punitive.
You might have an excuse for driving while your license is suspended if your driving was in light of a true emergency (i.e., to save someone's life), but it is the court that determines if your reason for driving really was a situation that rose to the level of a legal "necessity." Just having to get to work is not an emergency, nor is having to transport your children to school or to soccer practice.
Driving on a suspended license might also worsen your pending DUI-DWI case, particularly if the judge in that case is the same judge on the suspended license case. Such "repeat" offenses send the judge a message that you are not remorseful for your DUI-DWI.
Depending upon your state's laws relating to a limited driving permit or restricted driver's license, the availability of such a restricted right to drive is almost always a matter controlled by statute, not a judge's discretion. So, if a restricted permit to drive is available and you comply with the conditions to get such a permit, a restricted license should be available to you, at least for a first offense in an impaired driving case.
Limited driving permits are a creation of state statute and are not a "right" under any state or federal constitution. This means that the availability of such a permit is controlled by state law. Your DUI-DWI defense specialist will be able to guide you through the steps needed to obtain such a "work permit" or limited occupational license.
In most states, if your arrest for DUI-DWI is a first offense, there are circumstances under which you may have a limited or restricted driver's license issued to you. Typically, if you meet your state's criteria, the limited license will identify what types of driving activity are permitted, and for what limited purposes.
If your DUI-DWI arrest is your first offense, you may be able to get your full driver's license back after a few days (or possibly a few months) of administrative suspension if you complete a state-mandated course such as driving school or a drug and alcohol evaluation. In some jurisdictions, both prerequisites must be met. This "right" to regain your FULL license is sometimes called an "early reinstatement."