OSHA construction health hazards study guide
Subpart D of OSHA's construction rules (29 CFR 1926.50 to 1926.66) covers occupational health and environmental controls. This guide sets out what the rule text states on medical services and first aid, sanitation, noise, lasers and microwaves, gases, vapors, fumes, dusts and mists, illumination, ventilation basics, the hazard communication pointer and the basics of the lead standard. Ionizing radiation, COVID-19, methylenedianiline, process safety management, HAZWOPER and spray booths are not covered. Consensus standards the rule names are only named here, not summarized. Every point links to the regulation and quotes its exact words.
Medical services and first aid
The employer must make sure medical personnel are available for advice and consultation on matters of occupational health.
“The employer shall insure the availability of medical personnel for advice and consultation on matters of occupational health.”
Provisions for prompt medical attention in case of serious injury must be made before the project starts.
“Provisions shall be made prior to commencement of the project for prompt medical attention in case of serious injury.”
If no infirmary, clinic, hospital or physician that is reasonably accessible in time and distance to the worksite is available to treat injured employees, a person with a valid first-aid training certificate from the U.S. Bureau of Mines, the American Red Cross, or equivalent training that can be verified by documentary evidence must be available at the worksite to render first aid.
“In the absence of an infirmary, clinic, hospital, or physician, that is reasonably accessible in terms of time and distance to the worksite, which is available for the treatment of injured employees, a person who has a valid certificate in first-aid training from the U.S. Bureau of Mines, the American Red Cross, or equivalent training that can be verified by documentary evidence, shall be available at the worksite to render first aid.”
First aid kit contents go in a weatherproof container with individual sealed packages for each type of item. The employer checks the kit before it is sent out on each job and at least weekly on each job so that used items are replaced.
“The contents of the first aid kit shall be placed in a weatherproof container with individual sealed packages for each type of item, and shall be checked by the employer before being sent out on each job and at least weekly on each job to ensure that the expended items are replaced.”
Proper equipment for prompt transportation of the injured person to a physician or hospital, or a communication system for contacting necessary ambulance service, must be provided.
“Proper equipment for prompt transportation of the injured person to a physician or hospital, or a communication system for contacting necessary ambulance service, shall be provided.”
Where 911 emergency dispatch services are not available, the telephone numbers of the physicians, hospitals or ambulances must be conspicuously posted.
“In areas where 911 emergency dispatch services are not available, the telephone numbers of the physicians, hospitals, or ambulances shall be conspicuously posted.”
Where 911 emergency dispatch services are available and the employer uses a communication system for contacting emergency-medical service, the employer must make sure the system is effective in contacting that service. When using a communication system in an area that does not automatically give the 911 dispatcher the caller's latitude and longitude, the employer must post, in a conspicuous location at the worksite, either the worksite's latitude and longitude or other location-identification information that communicates the worksite's location effectively to employees.
“In areas where 911 emergency dispatch services are available and an employer uses a communication system for contacting necessary emergency-medical service, the employer must: (i) Ensure that the communication system is effective in contacting the emergency-medical service; and (ii) (A) When using a communication system in an area that does not automatically supply the caller's latitude and longitude information to the 911 emergency dispatcher, the employer must post in a conspicuous location at the worksite either: (1) The latitude and longitude of the worksite; or (2) Other location-identification information that communicates effectively to employees the location of the worksite.”
The posting requirement does not apply to worksites with readily available telephone land lines whose 911 service automatically identifies the caller's location.
“The requirement specified in paragraph (f)(2)(ii)(A) of this section does not apply to worksites with readily available telephone land lines that have 911 emergency service that automatically identifies the location of the caller.”
Where the eyes or body of any person may be exposed to injurious corrosive materials, suitable facilities for quick drenching or flushing of the eyes and body must be provided within the work area for immediate emergency use.
“Where the eyes or body of any person may be exposed to injurious corrosive materials, suitable facilities for quick drenching or flushing of the eyes and body shall be provided within the work area for immediate emergency use.”
Sanitation
An adequate supply of potable water must be provided in all places of employment. Portable containers that dispense drinking water must be capable of being tightly closed and equipped with a tap, and water may not be dipped from containers.
“An adequate supply of potable water shall be provided in all places of employment. (2) Portable containers used to dispense drinking water shall be capable of being tightly closed, and equipped with a tap. Water shall not be dipped from containers.”
The common drinking cup is prohibited. Where single service cups are supplied, there must be a sanitary container for unused cups and a receptacle for used cups.
“The common drinking cup is prohibited. (5) Where single service cups (to be used but once) are supplied, both a sanitary container for the unused cups and a receptacle for disposing of the used cups shall be provided.”
Outlets for nonpotable water (such as water for industrial or firefighting purposes only) must be identified by signs meeting Subpart G that clearly show the water is unsafe and not to be used for drinking, washing or cooking. There may be no cross-connection, open or potential, between potable and nonpotable water systems.
“Outlets for nonpotable water, such as water for industrial or firefighting purposes only, shall be identified by signs meeting the requirements of subpart G of this part, to indicate clearly that the water is unsafe and is not to be used for drinking, washing, or cooking purposes. (2) There shall be no cross-connection, open or potential, between a system furnishing potable water and a system furnishing nonpotable water.”
Table D-1 sets the minimum toilet facilities: 1 for 20 or less employees; 1 toilet seat and 1 urinal per 40 workers for 20 or more; 1 toilet seat and 1 urinal per 50 workers for 200 or more.
“20 or less 1. 20 or more 1 toilet seat and 1 urinal per 40 workers. 200 or more 1 toilet seat and 1 urinal per 50 workers.”
The toilet requirements of 1926.51(c) do not apply to mobile crews that have transportation readily available to nearby toilet facilities.
“The requirements of this paragraph (c) for sanitation facilities shall not apply to mobile crews having transportation readily available to nearby toilet facilities.”
The employer must provide adequate washing facilities for employees applying paints, coatings, herbicides or insecticides, or in other operations where contaminants may be harmful to employees. The facilities must be in near proximity to the worksite and equipped so employees can remove such substances.
“The employer shall provide adequate washing facilities for employees engaged in the application of paints, coating, herbicides, or insecticides, or in other operations where contaminants may be harmful to the employees. Such facilities shall be in near proximity to the worksite and shall be so equipped as to enable employees to remove such substances.”
Where a particular standard requires showers, one shower must be provided for each 10 employees of each sex, or numerical fraction thereof, who must shower during the same shift.
“Whenever showers are required by a particular standard, the showers shall be provided in accordance with paragraphs (f)(4) (ii) through (v) of this section. (ii) One shower shall be provided for each 10 employees of each sex, or numerical fraction thereof, who are required to shower during the same shift.”
No employee may be allowed to eat or drink in a toilet room or in any area exposed to a toxic material.
“No employee shall be allowed to consume food or beverages in a toilet room nor in any area exposed to a toxic material.”
Noise
Protection against the effects of noise exposure must be provided when sound levels exceed Table D-2, measured on the A-scale of a standard sound level meter at slow response.
“Protection against the effects of noise exposure shall be provided when the sound levels exceed those shown in Table D-2 of this section when measured on the A-scale of a standard sound level meter at slow response.”
When employees are subjected to sound levels above Table D-2, feasible administrative or engineering controls must be used. If they fail to bring sound levels within the table, personal protective equipment as required in Subpart E must be provided and used to reduce sound levels within the table.
“When employees are subjected to sound levels exceeding those listed in Table D-2 of this section, feasible administrative or engineering controls shall be utilized. If such controls fail to reduce sound levels within the levels of the table, personal protective equipment as required in subpart E, shall be provided and used to reduce sound levels within the levels of the table.”
Table D-2 (Permissible Noise Exposures) lists duration per day against sound level in dBA, slow response: 8 hours at 90 dBA, 6 hours at 92, 4 hours at 95, 3 hours at 97 and 2 hours at 100 dBA.
“TABLE D-2-PERMISSIBLE NOISE EXPOSURES Duration per day, hours Sound level dBA slow response 8 90 6 92 4 95 3 97 2 100”
In all cases where sound levels exceed the table values, a continuing, effective hearing conservation program must be administered.
“In all cases where the sound levels exceed the values shown herein, a continuing, effective hearing conservation program shall be administered.”
Exposure to different levels for various periods is computed with the formula Fe = (T1/L1) + (T2/L2) + ... + (Tn/Ln), where Fe is the equivalent noise exposure factor, T is the period of exposure at an essentially constant level, and L is the permissible duration at that level from Table D-2. If Fe exceeds unity (1), the exposure exceeds permissible levels.
“Fe = (T1/L1) + (T2/L2) + · · · + (Tn/Ln) Where: Fe = The equivalent noise exposure factor. T = The period of noise exposure at any essentially constant level. L = The duration of the permissible noise exposure at the constant level (from Table D-2). If the value of Fe exceeds unity (1) the exposure exceeds permissible levels.”
Exposure to impulsive or impact noise should not exceed 140 dB peak sound pressure level.
“Exposure to impulsive or impact noise should not exceed 140 dB peak sound pressure level.”
Not covered here
The rows of Table D-2 for durations shorter than 2 hours, and the worked sample computation in 1926.52(d)(2)(iii); see the linked rule. We only write what an official source states, so study these parts with your certifying program's materials.
Lasers and microwaves (nonionizing radiation)
Only qualified and trained employees may be assigned to install, adjust and operate laser equipment, and proof of the operator's qualification must be available and in the operator's possession at all times.
“Only qualified and trained employees shall be assigned to install, adjust, and operate laser equipment. (b) Proof of qualification of the laser equipment operator shall be available and in possession of the operator at all times.”
Employees working in areas where a potential exposure to direct or reflected laser light greater than 0.005 watts (5 milliwatts) exists must be provided with antilaser eye protection devices as specified in Subpart E.
“Employees, when working in areas in which a potential exposure to direct or reflected laser light greater than 0.005 watts (5 milliwatts) exists, shall be provided with antilaser eye protection devices as specified in subpart E of this part.”
Beam shutters or caps must be used, or the laser turned off, when laser transmission is not actually required. A laser left unattended for a substantial period (such as lunch hour, overnight or change of shifts) must be turned off. Only mechanical or electronic means may be used as a detector for guiding the laser's internal alignment, and the laser beam may not be directed at employees.
“Beam shutters or caps shall be utilized, or the laser turned off, when laser transmission is not actually required. When the laser is left unattended for a substantial period of time, such as during lunch hour, overnight, or at change of shifts, the laser shall be turned off. (f) Only mechanical or electronic means shall be used as a detector for guiding the internal alignment of the laser. (g) The laser beam shall not be directed at employees.”
Employees may not be exposed to microwave power densities above 10 milliwatts per square centimeter.
“Employees shall not be exposed to microwave power densities in excess of 10 milliwatts per square centimeter.”
Not covered here
The other 1926.54 laser rules: warning placards, operation in rain, snow, dust or fog, output labels, the light intensity limits in 1926.54(j) and unit placement. We only write what an official source states, so study these parts with your certifying program's materials.
Air contaminants and ventilation
For a substance in Table 1 of 1926.55 whose permissible exposure limit is preceded by (C), exposure determined from breathing-zone air samples must at no time exceed the limit. If instantaneous monitoring is not feasible, the employer assesses the ceiling as a 15-minute time-weighted average that may not be exceeded at any time during the working day.
“An employee's exposure, as determined from breathing-zone air samples, to any substance in Table 1 of this section with a permissible exposure limit preceded by (C) must at no time exceed the exposure limit specified for that substance. If instantaneous monitoring is not feasible, then the employer must assess the ceiling as a 15-minute time-weighted average exposure that the employer cannot exceed at any time during the working day.”
For a substance in Table 1 or 2 whose permissible exposure limit is not preceded by (C), exposure determined from breathing-zone air samples must not exceed the limit measured as an 8-hour time-weighted average in any work shift.
“An employee's exposure, as determined from breathing-zone air samples, to any substance in Table 1 or 2 of this section with a permissible exposure limit not preceded by (C) must not exceed the limit specified for that substance measured as an 8-hour time-weighted average in any work shift.”
To comply with these limits, administrative or engineering controls must first be implemented whenever feasible. When such controls are not feasible to achieve full compliance, protective equipment or other protective measures must be used to keep exposure within the limits.
“To achieve compliance with paragraph (a) of this section, administrative or engineering controls must first be implemented whenever feasible. When such controls are not feasible to achieve full compliance, protective equipment or other protective measures shall be used to keep the exposure of employees to air contaminants within the limits prescribed in this section.”
Any equipment and technical measures used for this purpose must first be approved for each particular use by a competent industrial hygienist or other technically qualified person. Whenever respirators are used, their use must comply with 1926.103.
“Any equipment and technical measures used for this purpose must first be approved for each particular use by a competent industrial hygienist or other technically qualified person. Whenever respirators are used, their use shall comply with § 1926.103.”
Paragraphs (a) and (b) of 1926.55 do not apply to airborne asbestos, tremolite, anthophyllite or actinolite dust (1926.1101 applies) or to formaldehyde (1910.1048 applies).
“Paragraphs (a) and (b) of this section do not apply to the exposure of employees to airborne asbestos, tremolite, anthophyllite, or actinolite dust. Whenever any employee is exposed to airborne asbestos, tremolite, anthophyllite, or actinolite dust, the requirements of § 1926.1101 shall apply. (d) Paragraphs (a) and (b) of this section do not apply to the exposure of employees to formaldehyde. Whenever any employee is exposed to formaldehyde, the requirements of § 1910.1048 of this title shall apply.”
Whenever hazardous substances such as dusts, fumes, mists, vapors or gases exist or are produced in construction work, their concentrations may not exceed the limits in 1926.55(a). When ventilation is used as an engineering control, the system must be installed and operated according to 1926.57.
“Whenever hazardous substances such as dusts, fumes, mists, vapors, or gases exist or are produced in the course of construction work, their concentrations shall not exceed the limits specified in § 1926.55(a). When ventilation is used as an engineering control method, the system shall be installed and operated according to the requirements of this section.”
Local exhaust ventilation, when used this way, must be designed to prevent dispersion into the air of dusts, fumes, mists, vapors and gases in concentrations causing harmful exposure, and so that they are not drawn through the work area of employees.
“Local exhaust ventilation when used as described in (a) shall be designed to prevent dispersion into the air of dusts, fumes, mists, vapors, and gases in concentrations causing harmful exposure. Such exhaust systems shall be so designed that dusts, fumes, mists, vapors, or gases are not drawn through the work area of employees.”
The air outlet from every dust separator, and the contaminants collected by an exhaust or ventilating system, must discharge to the outside atmosphere. Collecting systems that return air to the work area may be used if the concentrations that build up in the work area air do not result in harmful exposure to employees.
“The air outlet from every dust separator, and the dusts, fumes, mists, vapors, or gases collected by an exhaust or ventilating system shall discharge to the outside atmosphere. Collecting systems which return air to work area may be used if concentrations which accumulate in the work area air do not result in harmful exposure to employees.”
Not covered here
The substance-by-substance limits in Tables 1 and 2 of 1926.55, and the detailed 1926.57 rules for abrasive blasting, grinding, spray finishing and open surface tanks. We only write what an official source states, so study these parts with your certifying program's materials.
Illumination
Construction areas, ramps, runways, corridors, offices, shops and storage areas must be lighted to at least the minimum intensities in Table D-3 while any work is in progress.
“Construction areas, ramps, runways, corridors, offices, shops, and storage areas shall be lighted to not less than the minimum illumination intensities listed in Table D-3 while any work is in progress:”
Table D-3 lists 3 foot-candles for general construction areas, concrete placement, excavation and waste areas, accessways, active storage areas, loading platforms, refueling and field maintenance areas.
“3 General construction areas, concrete placement, excavation and waste areas, accessways, active storage areas, loading platforms, refueling, and field maintenance areas.”
Tunnels, shafts and general underground work areas are listed at 5 foot-candles, with an exception: at least 10 foot-candles at the tunnel and shaft heading during drilling, mucking and scaling.
“5 Tunnels, shafts, and general underground work areas: (Exception: minimum of 10 footcandles is required at tunnel and shaft heading during drilling, mucking, and scaling.”
General construction plant and shops (such as batch plants, mechanical and electrical equipment rooms, carpenter shops, mess halls and indoor toilets) are listed at 10 foot-candles; first aid stations, infirmaries and offices at 30.
“10 General construction plant and shops (e.g., batch plants, screening plants, mechanical and electrical equipment rooms, carpenter shops, rigging lofts and active storerooms, barracks or living quarters, locker or dressing rooms, mess halls, and indoor toilets and workrooms). 30 First aid stations, infirmaries, and offices.”
Not covered here
The other rows of Table D-3 (general construction area lighting and indoor warehouses, corridors, hallways and exitways) and the cap light note; see the linked rule. We only write what an official source states, so study these parts with your certifying program's materials.
Hazard communication
Section 1926.59 is a note: the hazard communication requirements for construction work are identical to those in 29 CFR 1910.1200.
“The requirements applicable to construction work under this section are identical to those set forth at § 1910.1200 of this chapter.”
Not covered here
The content of 29 CFR 1910.1200 (labels, safety data sheets, training, written program and the 2024 revision's compliance dates). It has its own study guide. We only write what an official source states, so study these parts with your certifying program's materials.
Lead
1926.62 applies to all construction work where an employee may be occupationally exposed to lead, including construction work excluded from the general industry lead standard by 29 CFR 1910.1025(a)(2). Construction work means work for construction, alteration and/or repair, including painting and decorating.
“This section applies to all construction work where an employee may be occupationally exposed to lead. All construction work excluded from coverage in the general industry standard for lead by 29 CFR 1910.1025(a)(2) is covered by this standard. Construction work is defined as work for construction, alteration and/or repair, including painting and decorating.”
The action level is employee exposure, without regard to respirators, to an airborne lead concentration of 30 micrograms per cubic meter of air (30 µg/m3) calculated as an 8-hour TWA.
“Action level means employee exposure, without regard to the use of respirators, to an airborne concentration of lead of 30 micrograms per cubic meter of air (30 µg/m3) calculated as an 8-hour time-weighted average (TWA).”
The PEL: no employee may be exposed to lead at concentrations greater than 50 µg/m3 averaged over an 8-hour period. If an employee is exposed to lead for more than 8 hours in a work day, the allowable exposure (TWA) for that day is 400 divided by hours worked in the day.
“The employer shall assure that no employee is exposed to lead at concentrations greater than fifty micrograms per cubic meter of air (50 µg/m3) averaged over an 8-hour period. (2) If an employee is exposed to lead for more than 8 hours in any work day the employees' allowable exposure, as a time weighted average (TWA) for that day, shall be reduced according to the following formula: Allowable employee exposure (in µg/m3) = 400 divided by hours worked in the day.”
Where lead is present, for the tasks listed in 1926.62(d)(2)(i) (where lead-containing coatings or paint are present: manual demolition of structures such as drywall, manual scraping, manual sanding, heat gun applications and power tool cleaning with dust collection systems; and spray painting with lead paint), the employer must treat the employee as exposed above the PEL, and not in excess of ten times the PEL, and implement the protective measures in (d)(2)(v), until an exposure assessment documents that the employee is not exposed above the PEL.
“the employer shall treat the employee as if the employee were exposed above the PEL, and not in excess of ten (10) times the PEL, and shall implement employee protective measures prescribed in paragraph (d)(2)(v) of this section. The tasks covered by this requirement are: (A) Where lead containing coatings or paint are present: Manual demolition of structures (e.g, dry wall), manual scraping, manual sanding, heat gun applications, and power tool cleaning with dust collection systems; (B) Spray painting with lead paint.”
If the initial or a later determination shows exposure at or above the action level but at or below the PEL, monitoring is done at least every 6 months, and continues until at least two consecutive measurements, taken at least 7 days apart, are below the action level (except as otherwise provided in 1926.62(d)(7)).
“If the initial determination or subsequent determination reveals employee exposure to be at or above the action level but at or below the PEL the employer shall perform monitoring in accordance with this paragraph at least every 6 months. The employer shall continue monitoring at the required frequency until at least two consecutive measurements, taken at least 7 days apart, are below the action level”
If the initial determination shows exposure above the PEL, monitoring is quarterly until at least two consecutive measurements, taken at least 7 days apart, are at or below the PEL but at or above the action level; monitoring then follows the 6-month schedule of 1926.62(d)(6)(ii).
“If the initial determination reveals that employee exposure is above the PEL the employer shall perform monitoring quarterly. The employer shall continue monitoring at the required frequency until at least two consecutive measurements, taken at least 7 days apart, are at or below the PEL but at or above the action level at which time the employer shall repeat monitoring for that employee at the frequency specified in paragraph (d)(6)(ii) of this section”
Before the job starts, each employer must establish and implement a written compliance program to achieve compliance with the PEL in 1926.62(c).
“Prior to commencement of the job each employer shall establish and implement a written compliance program to achieve compliance with paragraph (c) of this section.”
Where an employee is exposed to lead above the PEL (without regard to respirators), where employees are exposed to lead compounds that may cause skin or eye irritation (e.g. lead arsenate, lead azide), and as interim protection for the tasks in 1926.62(d)(2), the employer must provide, at no cost to the employee, appropriate protective work clothing and equipment that prevents contamination of the employee and the employee's garments, and make sure it is used.
“Where an employee is exposed to lead above the PEL without regard to the use of respirators, where employees are exposed to lead compounds which may cause skin or eye irritation (e.g. lead arsenate, lead azide), and as interim protection for employees performing tasks as specified in paragraph (d)(2) of this section, the employer shall provide at no cost to the employee and assure that the employee uses appropriate protective work clothing and equipment that prevents contamination of the employee and the employee's garments”
The employer must make sure that in areas where employees are exposed to lead above the PEL (without regard to respirators), food or beverage is not present or consumed, tobacco products are not present or used, and cosmetics are not applied.
“The employer shall assure that in areas where employees are exposed to lead above the PEL without regard to the use of respirators, food or beverage is not present or consumed, tobacco products are not present or used, and cosmetics are not applied.”
Initial medical surveillance must be made available to employees occupationally exposed on any day to lead at or above the action level. It consists of blood sampling and analysis for lead and zinc protoporphyrin levels.
“The employer shall make available initial medical surveillance to employees occupationally exposed on any day to lead at or above the action level. Initial medical surveillance consists of biological monitoring in the form of blood sampling and analysis for lead and zinc protoporphyrin levels.”
A medical surveillance program under 1926.62(j)(2) and (j)(3) is required for all employees who are or may be exposed by the employer at or above the action level for more than 30 days in any consecutive 12 months.
“The employer shall institute a medical surveillance program in accordance with paragraphs (j)(2) and (j)(3) of this section for all employees who are or may be exposed by the employer at or above the action level for more than 30 days in any consecutive 12 months;”
The employer must remove an employee from work with exposure to lead at or above the action level each time a periodic and a follow-up blood sampling test show a blood lead level at or above 50 µg/dl.
“The employer shall remove an employee from work having an exposure to lead at or above the action level on each occasion that a periodic and a follow-up blood sampling test conducted pursuant to this section indicate that the employee's blood lead level is at or above 50 µg/dl”
An employee removed for a blood lead level at or above 50 µg/dl returns to former job status when two consecutive blood sampling tests show a blood lead level below 40 µg/dl.
“The employer shall return an employee to his or her former job status: (1) For an employee removed due to a blood lead level at or above 50 µg/dl when two consecutive blood sampling tests indicate that the employee's blood lead level is below 40 µg/dl;”
The employer must provide up to eighteen (18) months of medical removal protection benefits each time an employee is removed from exposure to lead or otherwise limited under 1926.62.
“The employer shall provide an employee up to eighteen (18) months of medical removal protection benefits on each occasion that an employee is removed from exposure to lead or otherwise limited pursuant to this section.”
The training program must be given at least annually to each employee exposed to lead at or above the action level on any day.
“The employer shall also provide the training program at least annually for each employee who is subject to lead exposure at or above the action level on any day.”
Not covered here
The contents and inspection and update rules of the written compliance program, the respirator, housekeeping and hygiene details, the full medical examination contents, multiple physician review, recordkeeping and the appendices of 1926.62. We only write what an official source states, so study these parts with your certifying program's materials.
Sources
- eCFR: 29 CFR 1926.50, Medical services and first aid (as of Nov 3, 2026)Checked November 5, 2026
- eCFR: 29 CFR 1926.51, Sanitation (as of Nov 3, 2026)Checked November 5, 2026
- eCFR: 29 CFR 1926.52, Occupational noise exposure (as of Nov 3, 2026)Checked November 5, 2026
- eCFR: 29 CFR 1926.54, Nonionizing radiation (as of Nov 3, 2026)Checked November 5, 2026
- eCFR: 29 CFR 1926.55, Gases, vapors, fumes, dusts, and mists (as of Nov 3, 2026)Checked November 5, 2026
- eCFR: 29 CFR 1926.57, Ventilation (as of Nov 3, 2026)Checked November 5, 2026
- eCFR: 29 CFR 1926.56, Illumination (as of Nov 3, 2026)Checked November 5, 2026
- eCFR: 29 CFR 1926.59, Hazard communication (as of Nov 3, 2026)Checked November 5, 2026
- eCFR: 29 CFR 1926.62, Lead (as of Nov 3, 2026)Checked November 5, 2026
Other OSHA Construction study guides: Introduction to OSHA, Fall protection, Scaffolds, Stairways and ladders, Electrical safety, Excavations, Personal protective equipment, Hazard communication, Respirable crystalline silica, Welding and cutting, General safety and health