history: I was working hard, hoping to get a raise after over 6 months of extra work and doing a great job, but it didn't happen. My boss kept me at the same pay. I've been working hard and doing a great job for several months_comma_ but still no raise.
current: thats always a bummer when you put in such work and get nothing in return 
next: Yeah, especially when my boss promised to pay me more. Might be time to quit!