I got a 10% raise at work (which I had to fight for but was then told I deserved it from the get-go), but the whole company was moved from getting a paycheck twice a month to every other week.
What's the difference? It means 26 paychecks a year (52/2) instead of 24 (12*2). So after the 10% raise, my salary is the same every paycheck!
You'll say “yes but at the end of the year it's the same!”, which is true, but now I want to leave and find a new job so my 10% raise and won't net me anything.
There are two 3-paycheck months (June and December) so I would have to wait until June, really, to see a 5% pay-bump and then December until the owed 10% pay bump.
A change I thought was innocuous was actually insidious. Classic.