It is widely assumed that the application of the Quebec Charter of Rights and Freedoms to federal undertakings operating in Quebec would be an impermissible encroachment on exclusive federal jurisdiction. According to this view, those who deal with undertakings doing business in banking, telecommunications or interprovincial transportation and those who work for them or are affected by their activities should have neither rights nor remedies under that Charter. However, the case law now recognizes that valid provincial legislation can apply to federal undertakings in a wide range of situations even when core federal powers are affected. In this paper, it is argued that the Charter constitutes an integral part of the law of delicts in Quebec and that such law has been held not to touch on the core of federal power regarding federal undertakings, except in rare cases. In addition, it is submitted that it should not be assumed that federal undertakings are immune from the Charter as a preventive and coercive instrument. Since the Supreme Court ruling in Canadian Western Bank, it is acknowledged that valid provincial legislation will be applicable to a federal undertaking unless the latter demonstrates not only that such law touches on the protected core of a federal power but effectively impairs the exercise of such core power. As a result, the Charter will apply whenever such proof of actual impairment is not made out.