working time /wˈɜːkɪŋ tˈaɪm/ /wˈɜːkɪŋ tˈaɪm/
business hour /bˈɪznəs ˈaɪʊɹ/ /bˈɪznəs ˈaʊə/
working hour /wˈɜːkɪŋ ˈaɪʊɹ/ /wˈɜːkɪŋ ˈaʊə/