What's Mallard raving about today?
Well, that depends...
If you're a member of a Union, you go on strike when your Union does so as part of collective bargaining.
If you're not a member of a Union, you can go on strike anytime you like, but you'll probably end up getting fired since you have no leverage.
If you're a talentless hack who gets paid to echo Right Wing talking points, pretty much every day is like being on strike, except that you get paid for not doing work.