Gas work is its own kind of plumbing, and everyone involved treats it with extra care. The utility handles the emergency side, and this service covers what comes after, the day the gas company has shut off service over a suspected leak and left you with a house that doesn't fully work. That day is stressful, with no hot water, no stove and maybe no heat depending on the season, and a licensed repair still has to happen before things are back to normal.
A licensed contractor with real gas experience comes out and finds the actual problem, because a shutoff tells you something is wrong without telling you what or where. It could be a fitting that has loosened over the years, a run of old pipe that is worn out, or corrosion at a connection nobody has looked at since it was installed. The contractor explains what they found in plain terms and lays out your options, and once you approve, the repair is made and pressure tested to show the system holds.
The same licensed path covers the planned side of gas work too, new appliance hookups, the range you're upgrading, the dryer that's being relocated, the outdoor line for the barbecue island, all of it installed and tested before use. Every gas job is performed by or under a licensed, insured contractor who works carefully and tests the line before it goes into service. If you are dealing with a shutoff or planning a new gas appliance, the first step is a phone call, and a licensed contractor takes it from there.