The main source of income of the village is tourism, especially hiking, mountain biking, paragliding, snowboarding and skiing, along with many other sports for which the village is an ideal starting point. Above Fiesch, in the Fiescheralp (previously referred to as K�hboden), there is a ski resort and a launch point for hang glider and paraglider pilots.
As of 2010, Fiesch had an unemployment rate of 2.4%. As of 2008, there were 10 people employed in the primary economic sector and about 7 businesses involved in this sector. 57 people were employed in the secondary sector and there were 14 businesses in this sector. 551 people were employed in the tertiary sector, with 78 businesses in this sector.There were 532 residents of the municipality who were employed in some capacity, of which females made up 41.9% of the workforce.
In 2008 the total number of full-time equivalent jobs was 511. The number of jobs in the primary sector was 5, all of which were in agriculture. The number of jobs in the secondary sector was 54 of which 23 or (42.6%) were in manufacturing and 31 (57.4%) were in construction. The number of jobs in the tertiary sector was 452. In the tertiary sector; 84 or 18.6% were in the sale or repair of motor vehicles, 55 or 12.2% were in the movement and storage of goods, 119 or 26.3% were in a hotel or restaurant, 1 was in the information industry, 18 or 4.0% were the insurance or financial industry, 9 or 2.0% were technical professionals or scientists, 4 or 0.9% were in education and 80 or 17.7% were in health care.
In 2000, there were 285 workers who commuted into the municipality and 183 workers who commuted away. The municipality is a net importer of workers, with about 1.6 workers entering the municipality for every one leaving. Of the working population, 10.2% used public transportation to get to work, and 39.1% used a private car
