spreadover

noun

1. (countable, uncountable)The variable arrangement of duties and breaks within overall work periods of fixed duration.

   “The eight-hour day spreadover was imposed on the Scottish miners in December of last year following upon the most open and flagrant betrayal by the Miners' Federation […]”

   “The total duration from sign-on to sign-off is called the spreadover of a shift. Many of the scheduling rules are dependent on ranges of spreadover lengths. Often, scheduling methods would simply cost a shift by its spreadover since actual wage cost is usually proportional to spreadover.”