NEVER work holidays for 1.5x pay if all employees gets paid 1x. I learned my lesson as a teen, once you cancel out the 1x from everyone, you're working for half pay. fuck that.
edit: to further explain, many retail places will offer 1.5x pay for those that work, but those that don't work get paid 1x anyway. so you're basically working for half pay once you remove the 1x pay from everyone.