<Li> definition of a strike; and </Li> <Li> definition of a lock - out . </Li> <P> "Strike" is defined as follows: </P> <P> the partial or complete concerted refusal to work, or the retardation or obstruction of work, by persons who are or have been employed by the same employer or by different employers, for the purposes of remedying a grievance or resolving a dispute in respect of any matter of mutual interest between employer and employee and every reference to work in this definition includes overtime work, whether it is voluntary or compulsory . </P>

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