Weather conditions dictate the ability to work in many primary industries.

Note: In the education sector, school bus drivers and cafeteria workers often experience seasonal unemployment during summer breaks, though they are technically "laid off" temporarily.

Governments often release "seasonally adjusted" unemployment rates. This removes the predictable "noise" of holiday hiring or harvest ends to show the true health of the economy.

Providing vocational training so workers can switch to different industries during their off-season.