When are preventative cool-down rest periods required in agriculture?

When the temperature equals or exceeds 95°F, employers must provide one ten-minute "preventative cool-down rest period" every 2 hours. During the first 8 hours of a shift, the cool-down periods may be provided at the same time as the rest periods already required by Industrial Welfare Commission Order No. 14 (8 CCR 11140).

If employees work longer than 8 hours, the employer must provide an additional 10-minute cool-down rest period every 2 hours. For example, if the shift extends beyond 8 hours, an additional rest period is required at the end of the eighth hour of work. If the shift extends beyond 10 hours, another is required at the end of the tenth hour.