Key Takeaways
- 29 CFR 1910.212 governs machine guarding inside a general industry facility such as a fabrication shop.
- Under 29 CFR 1910.12(b), anyone performing construction work is covered by Part 1926, where machine guarding is 1926.300(b).
- The standard follows the work your people are doing that day, and the employer's industry code has no part in it.
- A January 27, 1994 agency interpretation confirms that general industry and construction standards are never cross-referenced.
- Training documented against 1910.212 produces no record an inspector can accept on a construction site.
Your fabrication shop runs clean, with every machine guarded and every certificate on file. Then a project calls for 2 of those operators to take a portable saw to an active jobsite for a week. Both the machine and the crew cross the gate, and the rule covering them changes at the property line.
Crossing that gate moves the work into the construction standards, where machine guarding is 1926.300(b). Construction work means work for construction, alteration or repair, and the standards follow the work your people do. Your shop's certificates name a different standard, so they answer a different question from the one an inspector asks on site.
The mismatch between the record and the site is where the exposure begins. An inspector on that jobsite reads your records against the construction provisions. Records built for one environment leave you carrying risk in both places at once.
What 1910.212 Requires and Where Its Authority Ends
The general industry rule asks for one or more methods of guarding that protect the operator from the point of operation, from nip points, from rotating parts and from flying chips. Barrier guards, 2-hand tripping devices and electronic safety devices all qualify, and a guard may not introduce a new hazard of its own. Both fixed machines and fan blades get their own line, with a half-inch limit on fan guard openings below 7 feet.
What the rule does not contain is any statement about construction sites. Its exclusion is structural, because Subpart O covers general industry and the agency does not cross-reference the 2 bodies of standards. That policy was stated in a January 27, 1994 interpretation letter, which is the document an inspector relies on today.
The provision that decides which body applies is 29 CFR 1910.12(b). It defines construction work as work for construction, alteration or repair, including painting and decorating. Applicability turns on the nature of that work, so a shop crew operating equipment at a project site is performing construction work.
What 1926.300(b) Requires at the Construction Site
On that site the governing provision covers all hand and power tools and similar equipment used in the work, whether you furnished the machine or the worker brought it. Its subsection (b) requires guarding for moving parts exposed to contact. Barrier guards, 2-hand tripping devices and electronic safety devices are permissible under both standards, which is why the 2 texts read alike.
The resemblance between those texts was built on purpose. That language was reprinted from the general industry rule into the construction part so that a jobsite carried equivalent protection, and no inspector had to reach across the 2 bodies of standards. What differs is the record you keep and its citation.
Subpart I also carries 1926.307, which governs mechanical power-transmission apparatus on construction sites. It covers belts, shafting, gears, sprockets, chains, flywheels and couplings in component-level detail. Any concrete batch plant, temporary transmission assembly or mobile processing unit at the site boundary falls under both provisions.
Requirement | General industry (1910.212) | Construction (1926.300(b)) |
|---|---|---|
Where it applies | Fabrication shops, manufacturing and processing plants | Active construction, alteration or repair worksites |
What triggers it | Operations in a fixed general industry establishment | Work meeting the 1910.12(b) definition of construction work |
Coverage scope | Fixed and portable machines in that establishment | Hand and power tools and equipment at the worksite |
Guarding methods | Barrier guards, 2-hand tripping, electronic devices | Barrier guards, 2-hand tripping, electronic devices |
Companion standard | 1910.217 power presses, 1910.213 woodworking machinery | 1926.307 mechanical power-transmission apparatus |
What the record proves | General industry compliance | Construction compliance |
Assign the right machine guarding course to the right crew.
KC Library carries workplace and industrial safety content your team can assign by work location, with completion recorded against each person.
The Machine Guarding Rules for Contractors Who Cross the Gate
Machine guarding rules for contractors separate at this one seam. Take the safety manager keeping current general industry records for the shop, who is doing the right thing for that building. Sending those same people to a jobsite without a construction record opens a gap.
The gap is measurable, and the citation numbers show how common it is. In fiscal year 2025 the agency issued 1,498 citations under the general industry machine guarding rule, which placed it 10th on the most-cited list. Construction-site citations are counted separately, so the 2 tallies never combine.
Where the Guarding Degrades
Guarding degrades on a predictable schedule, which is the other half of the problem. Guards come off during maintenance and go back on late, improvised point-of-operation exposures accumulate, and operator awareness fades where turnover is high. Both environments show the same pattern, and only the paperwork behind them differs. Teams that already run forklift training against the OSHA standard know how quickly a current record goes stale.
Keeping each record current takes 3 checks before you move anyone from the shop to a site:
- Confirm the work at that address meets the definition of construction work.
- Assign the construction machine guarding course to the people going, by name.
- Keep the shop record and the site record under separate standard numbers.
Structuring a Training Program That Follows the Work
Following the work means running 2 tracks, with one record set for the shop and one for the site. Track 1 documents general industry compliance for the fabrication floor. Track 2 documents 1926.300(b) and 1926.307 compliance for anyone performing construction work at a project site, however short the visit is.
The 2 tracks can share trainers and share course material, and they still have to produce separate records tied to the standard number each one satisfies. Separation is what an inspector tests, since a citation names 1 standard. A certificate naming the general industry rule does not answer a construction citation, and it reads to an inspector as no training at all.
Program design starts with the site assignment question your scheduler answers every week. Before anyone moves from a shop or warehouse to a construction worksite, the training record should already show a current completion under the construction provisions, with the date on it. Construction firms meet the same timing problem when they sequence an onboarding journey across the first weeks.
Where a Platform Keeps the 2 Records Apart
Moving together is a scheduling problem before it is a training problem, and that is where a platform earns its place. KC Library supplies the training half, with workplace and industrial safety content that includes machine guarding. The catalog is organized by safety topic, so the mapping is yours.
Deciding that mapping yourself is the honest part of this. Nothing in the catalog arrives pre-split between the general industry rule and the construction rule, so the standard number on each record is yours to set. Once you have set it, the platform keeps them apart.
KC LMS assigns a course to the people you choose, with a due date, reminder days and an auto-enrollment rule that follows the department or role on their record. Each completion is stored against the named person with a date and a certificate carrying its own number. Overdue escalation notifies the learner and then the manager.
That audit trail is what an inspector reads on the day, and it is the only thing that settles the question. Both inspections are answered by 2 tracks under 2 numbers. Construction crews use the same arrangement to keep PPE training current between projects, and the records stay correct without further effort.
Frequently Asked Questions
1. Do workers need separate training records for 29 CFR 1910.212 and 29 CFR 1926.300(b)?
Yes. A training record should reference the standard that governs the worker's actual work location. A record citing 1910.212 documents general industry machine guarding compliance, and a record citing 1926.300(b) documents construction machine guarding compliance. Inspectors check the standard applicable to the site, and the employer's general compliance history does not substitute for it.
2. If a worker is fully trained on 1910.212, is 1926.300(b) training still needed before a jobsite assignment?
Yes. Training under 1910.212 produces a general industry compliance record and no record of compliance with the construction standard. Workers assigned to active construction sites need training that references 1926.300(b) and, where mechanical power transmission is involved, 1926.307. The employer needs both records available for the applicable inspection.
3. Does 1926.300(b) apply to equipment a fabrication shop brings to an active jobsite?
Yes. Under 29 CFR 1910.12(b), construction work means work for construction, alteration and repair. The applicable standards follow the nature of the work, and the employer's industry classification has no bearing on it. Equipment from a fabrication shop operating at an active construction site falls under 1926.300(b) and the related Part 1926 provisions.
4. Does OSHA ever apply 1910.212 during a construction site inspection?
Generally no. The agency's enforcement policy, confirmed in a January 27, 1994 standard interpretation, states that general industry and construction standards are not cross-referenced. Where a Part 1926 provision addresses the same hazard, 1926.300(b) governs at the construction site. Producing a 1910.212 compliance record in response to a 1926.300(b) citation does not satisfy the citation.
5. What does a compliant training record have to show?
The named person, the course, the standard number it was tied to, and the date of completion. An inspector asking who was trained, on what, and when should be able to read the answer without reconstruction. A record that names a topic without naming the standard leaves the employer arguing about which rule it was meant to satisfy.
References
- Cornell Law School Legal Information Institute. 29 CFR 1910.12, Construction work.
- Cornell Law School Legal Information Institute. 29 CFR 1910.212, General requirements for all machines.
- Cornell Law School Legal Information Institute. 29 CFR 1926.300, Tools and general requirements.
- Cornell Law School Legal Information Institute. 29 CFR 1926.307, Mechanical power-transmission apparatus.
- Occupational Safety and Health Administration. Standard interpretation of January 27, 1994 on general industry and construction standards.
- Occupational Safety and Health Administration. Most cited standards for fiscal year 2025.