This enactment amends the Canada Labour Code to, among other things, (a) amend the scope of the prohibition relating to replacement workers by removing the requirement of demonstrating a purpose of undermining a trade union’s representational capacity, by adding persons whose services must not be used during legal strikes and lockouts and by providing certain exceptions; (b) prohibit employers from using, during a legal strike or lockout intended to involve the cessation of work by all employees in a bargaining unit, the services of an employee in that unit, subject to certain exceptions; (c) make the contravention by employers of either of those prohibitions an offence punishable by a fine of up to $100,000 per day; (d) authorize the Governor in Council to make regulations establishing an administrative monetary penalties scheme for the purpose of promoting compliance with those prohibitions; and (e) amend the maintenance of activities process in order to, among other things, encourage employers and trade unions to reach an earlier agreement respecting activities to be maintained in the event of a legal strike or lockout, encourage faster decision making by the Canada Industrial Relations Board when parties are unable to agree and reduce the need for the Minister of Labour to make referrals to the Board.