<human>: Okay, first off if this is the wrong sub for this question please advise me to where I should post it. Also, I made a throwaway for this post if you need more personal information about wages.   
    
So this is what's going on, the company I work for and another (much larger) company in same industry got bought out by a third (much much much larger) company and they in turn merged the two together. Now working for the new company I found out employees of the other company are getting a day rate bonus that is significantly larger than our smaller company was paying us.   
  
In this industry workers are paid a base salary that is based off employee experience level and productivity, and a day rate that is a flat amount everyone gets paid for each day they work. Basically, I'm working with people doing the exact same job for the same company and they're making $560 more a month on the day rate.   
  
To add one more wrinkle to the conundrum, we (smaller company) are getting paid directly by the much much much larger company, while employees of the other company are still being paid by their old employer. It has something to do with the merger not being 100% official until the 1st of the year. We all report to the same people, call ourselves the same company, have the same emails and business cards, but our checks have different names on them.   
  
I've repeatedly talked to my bosses explaining I thought this was unfair and asking to be brought up to their pay scale, but the explanation they're giving me is that we're separate but equal until the 1st of the year, and the much much much larger company won't "give any raises" until then. 

My basic question is is there anything ethically/morally/legally wrong with what's going on with pay wage scales of employees after a merger, or if I should just put my head down and grind it out until the 1st?

Condense the text into a few key points
<bot>: Getting paid less than employees doing the same job after a merger, and I feel this is wrong. Is there anything I can or should do?