Labor and the unions never let a chance go by.

There are 69 Labor MPs in the House of Representatives.

They are the opposition.  Paid by taxpayers to represent their constituents - with cars, offices, staff, printing allowances, postage allowances, computers, internet, Twitter, Facebook, email - and perhaps most importantly, the House of Representatives chamber with its televised proceedings and a fawning press gallery on hand to get the message out.

But that's apparently not enough for the Labor machine.

It wants your money to "bring down as wave of pressure" on the Government of Turnbull over penalty rates.