Net income is what goes into your bank after taxes/etc. In the US, the higher tax brackets are around 30% for federal taxes alone, so that extra $20k costs the company around $30k. Not counting state taxes or anything else like paying into benefits. Not sure if retirement savings count here. So let's say between $35k and $40k.
Googling "personal assistant salary", it looks like the average in the US is ~$50k/year. So a personal assistant would cost more, but it is in the right ballpark where that could be a better choice than that raise if this is the reason for the raise:
> with the skills necessary to do enough of your job that you go from "overworked" to "takes off early most days to go play golf."
Googling "personal assistant salary", it looks like the average in the US is ~$50k/year. So a personal assistant would cost more, but it is in the right ballpark where that could be a better choice than that raise if this is the reason for the raise:
> with the skills necessary to do enough of your job that you go from "overworked" to "takes off early most days to go play golf."