Question about pay

when I got hired on they told us one pay rate but I just saw online that people hired after a certain time, which is before I was hired, would be getting 13 bucks. Well when will the increase happen?

eats packages

Brings a Switch to work
When the union contract is ratified (expect around april) All hours worked before then and the old contract expiration august last year will be subject to a retroactive check for the difference between your current wage rate and $13.