<prompt> Translate the following text to EnglishMabadiliko makubwa yanaweza kuhusisha kubuni upya taratibu za kazi, kubadilisha sheria za kazi, kuendeleza maelezo mapya ya kazi, kuanzisha masaa mapya ya kazi, au kufanya mabadiliko mengine kwa mazingira ya kazi ambayo ni ya wasiwasi hasa kwa vyama vya wafanyakazi.  <response>: Major changes can involve redesigning work processes, changing work rules, developing new job descriptions, establishing new work hours, or making other changes to the work environment that are of particular concern to employees unions. 