In the agricultural sector, unemployment peaks during the off-season—post-harvest and pre-planting. Similarly, the construction industry in the northern latitudes slows dramatically when the ground freezes and daylight hours dwindle. A roofer in Minnesota may have steady work in July, but the definition of his employment status changes drastically in January, not because he lacks skills, but because the environment prohibits the work.
In simple terms, it is the temporary joblessness that happens when an industry’s busy season ends and its slow season begins. seasonal unemployment definition