 In 1948, amid small-scale sickouts and walkouts, the CTU authorized a strike when teachers experienced still more 'payless paydays' due to city neglect.The strike was averted hours before it was scheduled to begin, when the school board approved a new budget and announced that the checks due to the teachers had been mailed with all possible haste.In addition to perennial requests for salary increases, the CTU began demanding more direct changes to Chicago's public schools.