Complex sentence: Industrial action, sometimes also called collective action, generally refers to employees acting together to force the hand of the employer, but employers, too, for the purposes of industrial action, employers may act individually or collectively with other employers to lock out employees.
Split into simpler sentences: Industrial action, sometimes also called collective action, refers to employees acting together to force the hand of the employer. For the purposes of industrial action, employers may act individually or collectively with other employers to lock out employees.