Final answer:
A bank is covered by the Canada Labor Code because it operates within the federally regulated banking sector. Other businesses like a book store, a mining company, unless federal, and a hair styling salon would typically be governed by provincial labor laws.
Step-by-step explanation:
Regarding the coverage of the Canada Labor Code, the employers that are covered include those operating in federally regulated industries. Among the options provided, a bank falls under the federal jurisdiction and therefore is covered by the Canada Labour Code. More specifically, banks are mentioned in the official list of federally regulated industries and activities. Federally regulated sectors also include air transportation, broadcasting, telecommunications, and others. A book store, a mining company and a hair styling salon are most likely to be regulated by provincial labor laws unless the mining company operates across provincial or international borders, in which case it could also fall under federal jurisdiction.