Possible Clues:

• Amounts deducted from wages
• Work cessation
• Block calls for money deducted from wages
• Closures, say, shut down the presses
• 7 downs at the end of the book?
• Red light over the leaves
• Check summons for money deducted from wages
• They hold one up to put no more leaves in the book
• Don't let the leaves of the book go on as a result of strikes
• Strikes get the posts broken with the last of 14 down