Site Safety Manager vs Site Safety Coordinator

What each credential is

The Site Safety Manager (SSM) and Site Safety Coordinator (SSC) are both NYC Department of Buildings-issued credentials. Both are governed by NYC Building Code §3310. Both authorize the holder to serve as the licensed safety professional responsible for a Major Building construction project in New York City.

The fundamental difference is the project tier each credential covers:

An SSM license covers both Tier 1 and Tier 2 projects. An SSC license covers Tier 2 only.

How the §3310 threshold works

NYC BC §3310 ties the credential requirement to two independent thresholds: story count and height in feet. You trip the requirement at whichever you cross first.

• 15 stories or taller triggers the SSM requirement, regardless of height in feet.
• 200 feet or taller triggers the SSM requirement, regardless of story count.
• 7–14 stories or 100–199 feet triggers the SSC requirement.
• Below both thresholds, no SSM or SSC is required under §3310, though the BC §3312 Construction Superintendent requirement may apply.

Mechanical penthouses count toward the story total. Cellars generally don't. DOB enforcement is hard at the threshold: there's no waiver for being one story over the line.

Story-counting methodology for §3310 threshold purposes should be confirmed against the DOB NOW project filing before mobilization.

§3310 also allows DOB to designate any project as requiring an SSM regardless of height. Designation letters appear in the DOB NOW project record.

Daily duties: what they share

On a day-to-day basis, the SSM and SSC perform the same operational role. The scope of project they're allowed to cover differs. The work inside that scope is the same.

Both the SSM and SSC:

• Are on site whenever active construction is happening
• Conduct a morning site walk and document it in the SSM logbook
• Review the day's planned operations against the approved Site Safety Plan (§3304)
• Sign off on major operations: concrete pours (coordinated with the CSM under §3310.10), hoist movements, scaffold builds, demolition phases
• Coordinate with the FDNY Fire Safety Manager on hot-work permits and fire watch
• Greet DOB inspectors on scheduled and unscheduled visits, facilitate access, respond to observations
• Enforce the approved Site Safety Plan against sub-trade and GC operations
• Hold and use stop-work authority when they observe an unsafe condition
• Close out the logbook at end of day with a record of significant events

The SSM logbook is a formal DOB record. Inspectors review it. A sparse or missing logbook is itself a §3310 compliance issue.

Where they differ

The practical differences between SSM and SSC work come from project size and complexity:

Project tier. The SSM covers 15+ stories or 200+ ft. The SSC covers 7–14 stories or 100–199 ft. This is the non-negotiable divide. An SSC on a Tier 1 project is a stop-work-order trigger.

Exam and experience requirements. The SSM exam and experience prerequisites are higher than those for the SSC. SSM candidates typically need more documented years of field experience in NYC construction safety before sitting the DOB exam.

Complexity of operations. Tier 1 projects typically involve higher crane operations, larger concrete pours, more complex multi-trade coordination, and greater public exposure. The SSM's field experience must match that complexity.

Scope of authority. An SSM license authorizes the holder to serve on any §3310 project. An SSC license restricts the holder to Tier 2 projects.

Both credentials require a current 62-hour SST Supervisor card under Local Law 196. Both carry individual liability to DOB for their project's compliance posture.

Credential path and exam

The standard credential ladder in NYC:

1. OSHA-30 Construction (federal, 30 hours)
2. 62-hour SST Supervisor card (NYC Local Law 196)
3. DOB Site Safety Coordinator license (experience + exam)
4. DOB Site Safety Manager license (additional experience + higher-level exam)

The DOB administers the SSC and SSM examinations. Exam content covers Chapter 33, OSHA 29 CFR 1926, FDNY rules, and NYC administrative requirements. Passing scores and experience documentation are submitted through the DOB licensing process.

Many working SSCs pursue the SSM upgrade while on the job. SSM pays for exam prep and continuing education for employees working toward the upgrade.

How to decide which you need

The decision is mechanical once you know your project's height and story count:

1. Is the finished building 15 stories or taller, or 200 feet or taller? → SSM required under §3310.
2. Is it 7–14 stories or 100–199 feet? → SSC required under §3310.
3. Below both thresholds? → Check the DOB NOW project record for any §3310 designation. If no designation, check §3312 for Construction Superintendent requirement.
4. Borderline between SSC and SSM? → Hire the SSM. The rate difference between SSC and SSM coverage is far smaller than the schedule impact of a wrong credential call.

Confirm the threshold determination against the DOB NOW project filing before mobilization. A licensed safety firm can verify in a 10-minute review.

Bottom line

SSM and SSC are the same operational role at different project tiers. §3310 governs both. The SSM threshold is 15 stories or 200 ft. The SSC threshold is 7–14 stories or 100–199 ft. The daily work is the same. The coverage authority is not. An SSC on an SSM-tier project is a stop-work-order trigger.

Skilled Safety Management staffs both SSMs and SSCs. Call (212) 498-8863 or use the contact form to confirm which credential your project requires.

Frequently asked questions

Working on a NYC project? Skilled Safety Management staffs licensed Site Safety Managers, Coordinators, Concrete Safety Managers, and FDNY Fire Safety Managers throughout the five boroughs. Send your project details through our contact form or call (212) 498-8863 for a fixed-fee proposal in 24 hours.