Class Code 5107
Door, Door Frame/Pre-Glazed Window Installation
Class Code 5107 applies to workers who install doors, door frames and pre‑glazed window units in California. The September 1, 2026 approved pure premium rate for this class is $6.171 per $100 of payroll. Key HR helps California employers apply the correct classification, manage claims, and improve jobsite safety to control costs.
What Class Code 5107 Covers
This classification covers installation and fitting of doors and door frames, plus setting pre‑glazed window units into frames or openings. Typical operations include measuring and squaring openings, anchoring metal or wood frames to masonry, steel or wood structures, hanging pre‑hung doors, installing and adjusting hardware (hinges, closers, locks), and sealing or caulking around frames and pre‑glazed units. The code is focused on installation work—it does not generally cover onsite glass fabrication or cutting of glazing that would be classified with glazing trades. Work can occur on residential remodels, commercial tenant improvements, storefronts, and new construction where crews lift, align and fasten heavy components at grade or at elevations.
Who It Applies To
- Commercial and residential door installation contractors (pre‑hung and knock‑down frames)
- Storefront and pre‑glazed window installers who set factory‑glazed units into frames
- General contractors or subcontractor door crews performing installation and hardware fitting
- Manufacturer field installation crews for pre‑hung doors and frames
- Building maintenance or tenant improvement crews assigned to door/frame replacement
Common Job Duties
- Measuring, leveling and anchoring door frames to wood, steel or masonry substrates
- Lifting and hanging pre‑hung doors and aligning with jambs and thresholds
- Installing and adjusting hardware: hinges, locks, closers, panic devices and sweeps
- Setting pre‑glazed window units into frame openings and applying sealants or gaskets
- Cutting or trimming jambs and sills, and finishing with caulking and weatherstripping
- Using power saws, drills, impact drivers, levels, lifts, and occasionally scaffolds or ladders
Common Injury Risks
Understanding the $6.171 Rate
The pure premium rate of $6.171 per $100 of payroll represents the WCIRB's estimate of expected claim costs for this classification. Insurers use the pure premium as the base to calculate your workers' comp premium, adding expense, loss prevention credits, experience modification, and policy-specific adjustments. Your final premium is affected by payroll accuracy, claim history, classification splits, deductible choices and insurer underwriting.
Cal/OSHA Compliance Requirements
Door and pre‑glazed window installation is governed by Cal/OSHA rules in Title 8, including the Injury and Illness Prevention Program (Section 3203), fall protection and ladder/scaffold safety requirements, and PPE and tool safety standards. Employers must provide training on ladder/scaffold use, manual handling and safe rigging, supply appropriate eye, hand and cut‑resistant protection, and maintain hazard communication for adhesives and solvents used on site.
How Key HR Helps Employers Under Class Code 5107
A PEO like Key HR helps California employers ensure correct classification and payroll allocation, run proactive safety programs, deliver targeted training (manual handling, ladder safety, glazing awareness), and manage claims and return‑to‑work to reduce indemnity and medical costs. Key HR also handles audits, centralized payroll reporting and coordinates experience modification and loss control initiatives to help lower workers' comp expense for Class Code 5107 employers.
Get a QuoteFrequently Asked Questions
Does Class Code 5107 cover glazing and on‑site glass cutting?
No. Class 5107 covers installation of doors, door frames and pre‑glazed window units. Field cutting, fabrication or removal of loose glass and full glazing work is typically classified under glazier codes; if your crew performs both installation and glazing, payroll should be split between the appropriate class codes.
What practical steps lower workers' comp costs for door installers?
Implement an IIPP, provide mechanical lifting aids and two‑person lifts for heavy doors, require cut‑resistant gloves and eye protection, train crews on ladder and scaffold safety, document jobsite hazard assessments, and maintain prompt claims reporting and early return‑to‑work programs to limit lost‑time exposure.
How should payroll be reported if employees do both door installation and other carpentry?
Payroll should be allocated to the class code that best describes the tasks actually performed. Time spent installing doors, frames or pre‑glazed units should be reported to 5107; other carpentry tasks should be reported under their appropriate codes. Key HR can help track and document payroll splits and prepare for insurer audits.
Quick Facts
- Class Code
- 5107
- Classification
- Door, Door Frame/Pre-Glazed Window Installation
- Pure Premium Rate
- $6.171 / $100 payroll
- Effective Date
- September 1, 2026
- Source
- WCIRB Approved Filing
Manage Workers' Comp Through a PEO
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