The work break was fought for, not handed out. At the 1903 Brussels International Congress of Hygiene and Demography, researchers began treating industrial fatigue as a measurable hazard tied to monotony, alcohol, and accidents rather than a personal moral failing. During World War I, Oxford physiologist A.F. Stanley Kent, sent by the UK Home Office to test a mid-shift tea break at a munitions factory, was refused by the manager and answered with a letter from the Home Secretary and a threat to have the police arrest him on the spot. His results, presented to Parliament in 1915, showed scheduled breaks raised total output. Meanwhile in Stoughton, Wisconsin, Norwegian immigrant wives hired by Osmond Gundersen to sort tobacco demanded morning and afternoon breaks to go home, tend their households, and drink coffee, the arrangement often cited as the birth of the American coffee break.

By 1902 Buffalo, New York employers were writing coffee breaks into company policy, and in 1952 the Pan American Coffee Bureau, working with behavioral psychologist John B. Watson, sold the slogan give yourself a coffee break. The law never caught up evenly. The 1938 Fair Labor Standards Act requires pay for short breaks but not the breaks themselves, and as of 2017, 26 states including Texas and Florida had no break requirement for adults. California went the other way, and its 2012 Brinker Restaurant ruling held that employers must provide breaks but need not police them, even as workers increasingly skip lunch to look productive.

• A 2017 proposal in Sweden’s Overtorneå municipality called for a one-hour paid break dedicated to sex.
• In 2007 California’s Supreme Court upheld an extra hour of pay for every day a Kenneth Cole Productions store manager worked nine-hour shifts without a break.
• Finland guarantees a one-hour break for shifts of six hours or more, negotiable down to 30 minutes, and Spain has the pausa del bocadillo.
• Norway requires a paid break whenever an employer fails to provide a satisfactory break room away from the work area.
• The smoke break once put mailroom clerks beside sales vice presidents, a cross-department mixing space that neutral break policies erased.