"ancillary effect" is a correct and usable phrase in written English.
It refers to a secondary or accompanying result or impact of something. Example: The new tax law had an ancillary effect on small businesses, causing many to struggle with increased financial burdens.
These reports have the ancillary effect of feeding a culture of fear in which we become afraid of everything, convinced that someone is looking to do us harm.
But the decision had an ancillary effect that ended up being much more important than its holding: It made judges the gatekeepers of scientific evidence.
These children are sometimes referred to as the "invisible" victims of mass incarceration, and their suffering has been characterized as its most pernicious ancillary effect.
It's a minor victory for Argentina, but in this case it may have a ancillary effect, signaling a reversal of fortune for the country.
When you amend your charter, you are really only doing one thing with the ancillary effect of making changes to a company's governance.
And, notes Eileen Costello, a pediatrician in Boston and co-author of the book "Quirky Kids: Understanding and Helping Your Child Who Doesn't Fit In," spending time and money on noble-minded alternative remedies like vision therapy may have a positive, ancillary effect on parents.
And then there are the ancillary effects.
Ancillary effects can also be negative.
"There are many ancillary effects to consider," said Hank Madden, a financial planner in Jacksonville.
In many situations executives need to go beyond the direct effects of an initiative and investigate its ancillary effects.
That has ancillary effects — like getting people interested in joining a union, which can be better equipped to make sure companies are following the rules.
