How to Screen Heavy Equipment Operators: 9 Questions and What to Listen For Screening Interview Template

Which machines have you run, and for each one give me the size class and roughly how many hours or seasons you have in the seat: excavator, dozer, loader, backhoe, skid steer, grader, roller. What kind of work was it (mass excavation, utility trench, fine grade, demolition, land clearing, pit load-out), and what machine did you sit in last?

What this assesses: This is the calibration question, because operator describes five different jobs. Strong answers name the size class, since a 3-ton mini and a 50-ton excavator are not the same trade, and they name the work rather than the machine alone. Listen for the split between trench work and production work. An operator off a pipe crew works to grade with people in the hole, reads a cut sheet, boxes out, and slopes the walls. An operator who has loaded trucks off a pit face for six years is fast and smooth and may have never set a laser. Both are good hires for the right job and neither is a good hire for the wrong one. Hours are self-reported and usually generous, so weight the description of the work more heavily than the number. A dozer operator who has only pushed stockpile has never cut a slope or held a finish grade. Be cautious with a list of eight machines all claimed at the same level, with I can run anything with tracks, and with a candidate who cannot name a model, a size class, or a single job. Do not screen on years alone either. Four years on one contractor's pipe crew can beat twenty years of generalist work if trench is what you are filling.

List what you hold right now and when each one expires: driver's license and class, CDL with endorsements, DOT medical card, OSHA 10 or 30, MSHA Part 46 or Part 48 training with the date of your last annual refresher, and any rigging, signal person, or crane certification. Have you had a moving violation or a DUI in the last five years, and is there anything on your motor vehicle record I should know about before I pull it?

What this assesses: This is the question that saves you two weeks, and it works because it asks for dates instead of a yes. Decide your own requirement before you score it, because the cards depend on the work. If the operator hauls the machine, a combination over 26,000 pounds gross means a Class A CDL and a current DOT medical card, and a strong operator who has never held a CDL is not disqualified, just limited to jobs where somebody else moves the iron. If any of your work is at a sand, gravel, or crushed stone operation, MSHA Part 46 reaches contractors too, and new miner training runs 24 hours with an 8-hour refresher every year. A candidate whose refresher lapsed last fall cannot start on that site Monday, and that is a scheduling fact worth knowing now. Strong answers give the dates, or say plainly that they will pull the cards and confirm tonight. Ask the driving record question the same way of every candidate. Plenty of good operators have something on their record, and you would rather hear it here than from your insurance carrier after you have made an offer. Be cautious with it is all current and no dates, with an OSHA card nobody can produce, and with a suspended CDL described as being worked out. Verify every one of these yourself and treat the answers as claims.

How do you work to grade? Walk me through the last thing you cut to a line: what you were given (blue tops, offset stakes, a cut sheet, a pipe laser, GPS machine control), how you checked yourself as you went, and how close you held it. If you have run GPS, which system, and what do you do when the screen stops matching the stakes?

What this assesses: Grade is where the money is lost, which makes this the most useful question on the list. Strong answers describe a method and a check, not a feel: they pull tape off a string line, they run a laser receiver on the stick, they work with a grade checker, they leave a little for the finish machine, and they verify before they call it good. They give a real tolerance and they know the tolerance is different for a building pad than for a rough cut. On pipe, listen for percent slope rather than depth alone, and for digging bedding and bell holes instead of just hitting a number at the invert. GPS is where the strongest answers separate. Operators who have run Trimble, Topcon, or Leica machine control know the model is only as good as the base setup and the daily check on a known benchmark, and they know the right move when the screen disagrees with the stakes is to stop and verify rather than trust the display and keep digging. Be cautious with the grade checker tells me where to dig and nothing further, and be more cautious with an operator who has never missed grade. Everyone has. The ones worth hiring can tell you how they caught it and what it cost.

You are digging an eight-foot trench for water line in wet sandy soil, and two laborers have to get in the hole to make a joint. What has to happen before anybody goes in, where does your spoil go, and what do you do if you see the wall start to slough while they are down there?

What this assesses: Trench collapse is the hazard that kills people on this work, and it happens faster than anyone can climb out. A cubic yard of soil runs around 3,000 pounds, roughly the weight of a car, so a partial collapse is not a scare, it is a burial. OSHA requires a protective system at five feet or deeper in anything but stable rock, so at eight feet in wet sand the answer has to include sloping it back, benching, or setting a trench box, with the competent person on site deciding which. Strong answers keep the spoil at least two feet back from the edge, expect a ladder or ramp within 25 feet of anyone in the hole, and know the competent person inspects before the shift and again after rain or any change in conditions. On the sloughing half, there is one right answer: people come out of the hole and the machine stops. Nothing gets fixed with somebody standing in it. Be cautious with an operator who describes lowering a box after the crew is already down, who parks the spoil at the lip because the right-of-way was tight, or who treats trench protection as the superintendent's problem. The operator has a better view of that wall than anyone else on the job. OSHA's [trenching and excavation](https://www.osha.gov/trenching-excavation) page has the requirements your competent person is working from.

The locates are marked and you start digging. Two feet down you find orange warning tape where nothing was painted on the surface. What do you do? Separately, tell me about a time you or somebody on your crew hit a line. What happened, and what would you do differently?

What this assesses: Every operator with real hours eventually digs where the ticket is wrong, and what happens in the next thirty seconds is the entire answer. Strong answers stop the machine. Then the foreman calls the one-call center for a re-mark or gets the utility back out, somebody hand digs or vacuum excavates to expose what is under the tape, and nobody goes back to production until they know what it is. Strong candidates also know the upstream basics without being walked to them: a valid 811 ticket before the first bucket, marks that are still legible, hand digging inside the tolerance zone around a marked line, and a fresh ticket when the old one ages out. On the second half, an operator with ten years who says they have never been near a strike is either newer than they claim or managing the interview. The answer you want names what got hit, whether it was a service or a main, and says they pulled people back and reported it rather than trying to make it go away. Be cautious with an operator who kept digging because the tape looked abandoned, with one who blames the locate company and describes no verification of their own, and with anyone who tells you a strike got covered up. That habit comes to your job with them.

Walk me through your walkaround before you start the machine. What are you actually looking at, and what have you found that made you shut it down or refuse to run it? How do you handle greasing, track tension, and a small hydraulic leak that is not getting worse?

What this assesses: Your repair bill is mostly decided by whoever is in the seat. Strong answers describe a real circle around the machine: fluids checked cold, a look underneath for fresh puddles, hoses and fittings, pins and bushings for slop, undercarriage and track tension, tooth and cutting edge wear, glass and mirrors, the extinguisher, and whether the last operator wrote anything in the log. They grease on a schedule they can name rather than when something starts squeaking. They watch DEF level, know what a regen is, and know that shutting a Tier 4 machine down in the middle of one hands a problem to the next operator. On the leak, the answer you want is that it gets reported the day it shows up with the hose and location identified, that a weeper gets watched, and that a spray or a line anywhere near hot exhaust stops the machine that shift. Be cautious with a candidate whose whole answer is that the shop handles maintenance, with one who has never refused to run anything, and with one who describes topping off hydraulic fluid every morning without ever asking where it is going. If the same person will be turning wrenches on your fleet, screen that separately with the [diesel mechanic template](/templates/diesel-mechanic).

You are loading trucks in a tight spot with a pipe crew, a grade checker, and a truck driver all moving around the machine. How do you keep track of people on the ground, what are your rules about the swing side, and tell me about a time you shut down because somebody was somewhere they should not have been.

What this assesses: Struck-by and caught-in-between are among the most common ways construction workers are killed, and an operator with a counterweight swinging behind them sits at the center of both. Strong answers describe eye contact before every swing, one designated person giving signals and nobody else, a horn pattern before starting and before backing, and a hard rule that the machine stops when somebody disappears from view instead of assuming where they went. They keep the swing side clear and they talk about the tail of the machine, because that is the part that catches people who only watched the bucket. They use cameras and mirrors without treating either as a substitute for turning around and looking. The best answers include the uncomfortable part, where they climbed out and had a conversation with somebody senior to them, or told a truck driver to stay in the cab and meant it. On overhead lines, listen for at least ten feet of clearance on anything up to 50 kV and a spotter when they are working close. Be cautious with an operator who has never once stopped work over a person on the ground, and with one who describes waving people off and continuing the swing. The tell is whether they describe the crew as their responsibility or as an obstacle.

Tell me about your production on the machine you know best. If you are loading a triaxle with a loader or an excavator, how many passes and how long per truck? If you are pushing with a dozer, how do you set up your cuts? How do you know when you are running fast enough versus too fast?

What this assesses: Production is the part of this job that actually gets measured, and good operators talk about it in numbers without being pushed. Strong answers give figures that make sense for the machine and the material: passes per truck and a cycle time, loads per hour off a face, or slot dozing to keep the blade full instead of side casting material somebody has to move twice. They talk about setting the machine up so the swing is short and they are not fighting the truck, keeping the bucket full rather than the arm fast, and staging trucks so the machine is never sitting. On a dozer, listen for pushing downhill where the site allows it, holding a straight cut, and leaving the work in a state the next machine can use. On the too-fast half, the honest answer is the right one: rushing eats undercarriage, spills material over the road, and puts a bucket somewhere it should not be. Be cautious with a candidate who cannot give a single number about their own work, and be equally cautious with a cycle time well outside what that machine can physically do. Numbers that are too good are a signal, not a bonus.

This job starts at [time] out of [the yard or the jobsite], runs [hours and days, including Saturdays], travels to jobs within [radius], and [does or does not] slow down in winter. What can you commit to? Do you have reliable transportation and a way to make a 6 a.m. start? Are you in a hall or working open shop? The work means climbing on and off equipment all day, outdoors in heat and cold, with vibration for a full shift, which you would do with or without a reasonable accommodation. We run a pre-employment drug screen. What hourly rate are you looking for?

What this assesses: Almost every operator hire that fails inside a month fails on this question, not on skill. Start times come first, because reporting to the yard at 6 a.m. and reporting to a jobsite 50 miles out are different commitments and candidates hear whichever one they would prefer. Say which one it is. Travel and per diem come next, and if some of your work is out of town for a week at a time, that belongs here rather than at offer. Winter is the one contractors soften and should not. If you lay off in December, say so, and say whether you call people back, because an operator with a mortgage will take a municipal job at lower pay for twelve months of work and you would rather find that out today. Hours cut both ways too, since 55 a week in season sells the job to one candidate and kills it for another. Ask the physical part exactly as written, as a job demands question with the accommodation language, and stay away from health history. Say the drug screen plainly, because some of the [candidate drop-off](/glossary/candidate-drop-off) right here is people selecting themselves out, and that is worth learning on day one instead of after a failed test and a lost week. Then score every applicant against the same [interview scorecard](/glossary/interview-scorecard) so grade skill and safety judgment pick the shortlist rather than who answered the phone, run it as a [structured interview](/glossary/structured-interview) so a pit operator and a pipe crew operator land on one rubric, and use [asynchronous screening](/glossary/asynchronous-screening), because the operator you want is in a cab with no signal until 4:30 and is never going to take your call at two in the afternoon.