Plenty of maintenance work ends with something heavy hanging from a hook: a motor coming off its base, a gearbox going in, a new machine set during a project. If you're the one rigging the load or giving the operator signals, OSHA has specific rules about who can do that. This guide explains signal person certification and rigger qualification for industrial maintenance techs: what the rules say, where "qualified" and "certified" differ, and which credential is worth getting first.
One caution up front. The OSHA rules below come from 29 CFR 1926 Subpart CC, the construction standard for cranes and derricks. Installs, rebuilds and project work at a plant may fall under it. Routine in-plant overhead crane work may fall under general industry rules instead. Ask your safety department which applies to your lift.
When OSHA Requires a Signal Person
According to OSHA's signal person fact sheet, the construction rule (1926.1419) requires a signal person in three situations:
- The operator can't fully see the point of operation, meaning the load or where it's going.
- The operator's view is blocked in the direction the equipment is moving.
- The operator or the person handling the load decides one is needed because of site-specific safety concerns.
In a plant, the first two come up all the time. Mobile cranes reaching into a building, loads lowered through roof openings and lifts behind structural steel all leave the operator unable to see the load.
Signal Person Certification vs. Qualification Under 1926.1428
The wording matters here. OSHA's rule says qualified, not certified. A rigging training article from Industrial Training International (ITI) warns against using "certified" loosely for exactly that reason. Under 1926.1428 there are two ways to become qualified:
| Route | How it works | Portable to other employers? |
|---|---|---|
| Third-party qualified evaluator | An outside evaluator tests you and documents that you meet the requirements | Yes. That's the main advantage. |
| Employer's qualified evaluator | Your employer's own evaluator assesses you and documents it | No. OSHA says other employers can't rely on it. |
Either way, OSHA requires the signal person to:
- Know and understand the types of signals used on the job
- Be competent in using them
- Understand how the equipment works and its limits, including crane dynamics when swinging, raising, lowering and stopping loads, and boom deflection under load
- Know the requirements in 1926.1419 through 1926.1422 and 1926.1428
- Pass both an oral or written test and a practical test
The documentation must be available at the worksite, on paper or electronically, and must list each type of signaling the person is qualified for, such as hand signals or radio. These provisions took effect on November 8, 2010.
Why the crane knowledge matters. ITI points out that boom movements change capacity. Booming down or extending the boom reduces it, and booming up or retracting increases it. A signal person who doesn't understand that can signal a load into an overload without knowing it. ITI also describes signaling as three steps: function and direction, then distance or speed, then function and stop.
What Makes a Qualified Rigger
The rigger rules are less specific. ITI's article explains how Subpart CC uses the term:
- 1926.1401 defines a qualified rigger simply as a rigger who meets the definition of a qualified person. That means someone with a recognized degree, certificate or professional standing, or extensive knowledge, training and experience.
- 1926.1404 requires a qualified rigger for rigging during crane assembly and disassembly.
- 1926.1425, as ITI reads it, requires qualified riggers for rigging materials on construction sites.
ITI notes that the regulation never lists exactly what a qualified rigger must know. In practice your employer decides, and third-party certification is the clearest proof.
ITI also says the second tier of the common rigger certifications, NCCCO Rigger Level 2 and CIC's Qualified Rigger, appear to meet OSHA's intent, while the entry tiers may not. Its reason is that the basic tiers don't require problem-solving, load or sling-tension calculations, or independent rigging decisions. A maintenance tech who rigs motors and gearboxes alone, without an engineer's lift plan, is making exactly those decisions.
Rigging skills that matter most in a plant
Whatever certification you pursue, these are the skills maintenance lifts actually call for:
- Estimating load weight. Reading nameplates and drawings, and working out the weight of steel parts when there's no tag
- Finding the center of gravity. Motors with the conduit box on one side and gearboxes with an overhanging shaft rarely balance in the middle
- Sling angles. Knowing that a flatter sling angle raises the tension in each leg, and reading the rated capacity for the hitch you're using
- Hardware inspection. Checking slings, shackles, eyebolts and hooks for damage and missing tags before every lift
- Choosing pick points. Using lifting lugs the manufacturer designed, and knowing when an eyebolt shouldn't be side-loaded
These are the problem-solving and calculation skills ITI says separate higher-tier rigger certifications from basic ones. They're also what keeps a motor from swinging into a cable tray.
NCCER's Signal Person Program
NCCER offers a signal person curriculum, along with assessments and practical exams that it says meet or exceed ASME B30 standards and OSHA Subpart CC. Third-party organizations deliver the exams, so you contact them directly for dates, locations and costs. The recommended training is 50 hours:
| Module | Recommended hours |
|---|---|
| Crane Communications | 10 |
| Basic Principles of Cranes | 15 |
| Crane Safety and Emergency Procedures | 25 |
| Total | 50 |
NCCER links a candidate handbook and a credential-expiration document from that page. Check both for the current test format and renewal period before you register.
Which Credential Should a Maintenance Tech Get First?
| Your situation | Start with |
|---|---|
| You help on lifts, hook loads and guide tag lines, but someone else leads | Your employer's rigging training. Learn sling angles, hitches and hardware inspection before chasing a card. |
| Contractors bring mobile cranes in and you're often the one who can see the load | Third-party signal person qualification, so it's documented and portable. |
| You plan and rig motor, pump and gearbox lifts yourself | Second-tier rigger certification (NCCCO Rigger Level 2 or CIC Qualified Rigger, per ITI). |
| You travel for shutdowns and outages | Third-party signal person qualification plus a rigger certification. Contractors check both at the gate. |
Whichever route you choose, ask two questions first. Does your employer already use a particular third-party evaluator or certifying body for contractors? Will the plant pay for the course and exam if you'll be signaling or rigging plant lifts? Both answers often point to the same credential.
Signal person qualification is usually the quickest first credential. Rigging is the more valuable skill over time, because it's what you use on every lift whether a crane is involved or not.
A Pre-Lift Checklist for Maintenance Lifts
Credentials don't replace good habits. Before any lift you're involved in, confirm:
- You know the load's weight from a nameplate, a drawing or a calculation, not a guess.
- You've identified the center of gravity and planned the hitch to match it.
- Slings, shackles and hooks are inspected, tagged and rated for the load at the sling angle you'll use.
- One designated signal person is agreed on, and the signal method (hand or radio) is confirmed with the operator.
- Everyone on the crew knows how a stop will be called and agrees to it before the load leaves the ground.
- The fall zone is clear and tag lines are in place.
- The equipment being removed is locked out and verified at zero energy before rigging begins.
That last item is where rigging and lockout meet. For the lockout, electrical safety and OSHA training plants expect, see the certifications that actually matter: NFPA 70E, OSHA and LOTO.
Why Rigging and Signaling Skills Pay Off
We found no public wage data separating certified riggers among maintenance techs. As a baseline, the median wage for industrial machinery mechanics was $31.02 an hour in 2025, according to BLS data on O*NET. Rigging skills add value in other ways:
- Shutdown and project work. Outages are full of lifts. Documented, portable credentials help you get onto those crews.
- Millwright work. Rigging and setting equipment is core millwright work, so the skill helps if you want to move that way.
- Trust on the floor. The tech the supervisor trusts to rig a critical motor is usually the one considered for lead.
For most industrial maintenance techs, third-party signal person qualification is the fastest, most portable first credential. A second-tier rigger certification is the more valuable longer-term goal if you plan and rig lifts yourself. Remember that OSHA requires qualified, not certified, and that employer-only qualification stays with that employer. Check with your safety department which crane standard covers your lifts before you choose a course.