Customs inspectors mainly work at airports, seaports, and outposts. They may work indoors or outdoors, depending on what type of station they are working in. In airports, they work closely with the baggage claims and passenger registration departments.

At seaports and outposts, the inspectors may work outside frequently as they inspect cargo ships and planes coming into and out of the country. This outside work will expose them to many different weather conditions and temperatures. Most customs inspectors do not have offices and are on their feet throughout the day. They also move around a lot while investigating travelers, luggage, and cargo.

Their workplace can also be quite dangerous for an inspector. When drugs and weapons are involved, the inspector can be in even greater danger. This is why training is so important, so that the inspector is capable of handling all the types of issues that may arise on the job. Inspectors who carry firearms are more protected than those who are not given the privilege.