Back in the 60's, when offered overtime, I mostly refused. While the pay at time and one half was very good, it would push me into another tax bracket and my take home was less.
This is one of the few ways that a wage earner can adjust his income to benefit taxwise. Usually it only applies to persons who are in sales or other occupations that can manipulate when and how they get paid.
As an investor, you can delay sales of stocks and bonds (or accelerate) to meet tax goals.
The poor shlub working for a paycheck has less flexibility.