Unfortunately, my mind lives in math (I have what could be called social dyslexia). So, it is hard for me to know where your stumbling blocks could be. My default is just to throw more math into the thread which might make it worse. I'll try with a diagram instead. Please let me know if this helps or makes it worse.
I'll make a few assumptions.
- I'll assume a starting salary of $50,000. The amount doesn't matter since it will cancel out at the end. But $50,000 seems like a starting place that isn't unreasonable for a typical American.
- I'll assume a constant raise of 3.73% each year. I just got this from a quick Google search of typical US annual raises. https://paydestiny.com/average-raise-after-1-year-of-work/ Obviously, any specific job will differ.
With those assumptions, the image below is what happens after 8 years: $50,000 -> $67,020. A person who got the US average raise over 8 years will have a 34% increase in salary. That is close but not quite the 40% that
@Zeze bemoaned. But, it isn't hard to imagine with his promotion, that he would have gotten at least a 5% raise in addition to the other raises. If his promotion led to an additional 5% raise, then he'd end up with $67,020 * 1.05 = $70,371. That is a 40.7% increase in 8 years.
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If Zeze didn't increase his salary by 40% in that time frame, then he either got lower than average raises or a promotion with almost no salary change. Both would be serious red flags to me to look for a better job.