Pre-Employment Screening: The Hire You Don't Make Could Be the Most Important Decision of Your Year

Here's a number worth sitting with: nearly half of U.S. employers still don't use drug tests for potential hires. For large corporations with legal departments and HR teams, that's a calculated risk. For a small or mid-size business, it can be a costly one.

If you're running a business with ten, twenty, or fifty employees, every hire carries weight. One bad one — the one who shows up impaired, causes an accident, files a workers' comp claim after an incident, or creates liability that lands in front of a judge — can cost more than a year's worth of revenue. And the hard truth is that drug abusers are four times more likely to be involved in a workplace accident and three times more likely to be less productive than their coworkers.

I've seen what happens after. In my years as a criminal defense paralegal, I watched cases unfold where employers found themselves in legal jeopardy not because they were negligent in any obvious way, but because they had no documentation, no program, and no policy to point to when things went sideways. The absence of a process becomes the problem. And the costs — legal fees, lost productivity, damaged reputation, regulatory scrutiny — don't only fall on the people who did something wrong. They fall on whoever didn't have a system in place.

So what does a good pre-employment screening program actually look like for a small business?

It doesn't have to be complicated. In fact, the simpler and more consistently applied it is, the better it will hold up if it's ever challenged. Here are the fundamentals:

A written policy. Before you test anyone, have a policy that clearly states when testing occurs, what substances are screened for, and what happens when someone tests positive. Apply it the same way, every time, to every candidate for the same type of role.

Test after a conditional offer, before the start date. This is the standard best practice — and it matters legally. Testing too early in the process creates risk. Testing after a conditional offer is extended but before the employee begins work keeps you on solid ground.

Use a certified, professional testing facility. Not all tests are created equal. Results need to come from a qualified lab with proper chain of custody documentation. If you ever need to defend a hiring decision or a termination, that documentation is your protection.

Know your industry. In Arizona, cannabis is legal for recreational use — but that doesn't mean your workplace has to accommodate impairment. Employers can still enforce drug-free workplace policies and prohibit use during work hours or on company property. If you're in transportation, healthcare, manufacturing, or any other safety-sensitive field, the stakes are even higher and the standards more specific.

Stay consistent once they're through the door. Pre-employment screening is your first line of defense, not your only one. A program that starts strong and quietly disappears sends exactly the wrong message — to your employees, your insurer, and anyone else who might scrutinize your practices later.

The good news for small and mid-size businesses is that building a solid pre-employment screening program doesn't require a large HR department or a compliance attorney on retainer. It requires a clear policy, a reliable testing partner, and the discipline to follow the process every single time.

That's where we come in. At Fastest Labs of Tempe, we work with local employers to make screening straightforward — fast results, proper documentation, and a single point of contact who knows your business and picks up the phone.

If you don't have a formal program yet, there's no better time. And if you do have one but haven't looked at it recently, it might be worth a second set of eyes.

Good intentions are not a defense. Documentation is.

*Jen is the owner of Fastest Labs of Tempe, providing drug testing, DNA testing, and fingerprinting services to Tempe/East Valley employers.