How many employees work at The Day & Zimmermann Gp?
The Day & Zimmermann Group, Inc. has approximately 36,181 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. The Day & Zimmermann Gp’s total headcount has declined 1.6% from 36,774 employees in 2023 to 36,181 in 2026.
Is The Day & Zimmermann Gp hiring right now?
Yes, The Day & Zimmermann Gp is actively hiring. The Day & Zimmermann Gp had 725 active job postings in 2026, a 27.5% increase from 2025 — see job openings & hiring trends.
About The Day & Zimmermann Gp’s Workforce
The Day & Zimmermann Group, Inc. is an Engineering and Construction Services company that employs 36,181 people worldwide as of March 2026. It is the 2nd-largest by headcount among its peers. Founded in 1901, the company is headquartered in Philadelphia, Pennsylvania.
The Day & Zimmermann Gp's workforce has declined 1.6% from 2023 to 2026, down 0.8% year over year in 2026. It fell to a low of 36,124 in 2025 Q4 before recovering. Its workforce is concentrated most in North America (80.4%), followed by Arab States (6.0%) and Sub-Saharan Africa (4.1%).
The Day & Zimmermann Gp's functional groups are Finance and Operations (39.2%), Engineering (34.4%), and Sales and Marketing (26.4%). The average salary is $79,541, ranging from a median of $81,000 in North America to $6,000 in South Asia, down 0.8% year over year in 2026.
The Day & Zimmermann Gp's active job postings rose 27.5% in 2026 to 725, with new postings per month cooling from 1,214 in 2023 to 677 in 2026. Overall employee sentiment is neutral but improving.
Sourced from Revelio Labs workforce data.
- Headquarters
- Philadelphia, Pennsylvania
- Founded
- 1901
- Industry
- Engineering and Construction Services
- Employees
- 36,181
- YoY
- -0.8% (-553)
As of March 2026
The Day & Zimmermann Gp workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for The Day & Zimmermann Gp. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsThe Day & Zimmermann Gp Annual Employee Count (2023-2026)
- The Day & Zimmermann Gp had 36,181 employees in 2026, a 0.8% decline (-553) from 2025.
- The Day & Zimmermann Gp had 36,124 employees in 2025, a 1.0% decline (-750) from 2024.
- The Day & Zimmermann Gp had 36,874 employees in 2024, a 0.8% decline (-15) from 2023.
- The Day & Zimmermann Gp had 36,889 employees in 2023, a 1.2% decline (-997) from 2022.
The Day & Zimmermann Gp's total workforce has grown from 36,124 employees in 2025 to 36,181 in 2026. The Day & Zimmermann Gp's headcount peaked at 37,339 in 2024 before declining in 2025 and recovering through 2026.
The Day & Zimmermann Group, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 36,181 | -553 | -0.8% |
| 2025 | Q4 | 36,124 | -750 | -1.0% |
| 2025 | Q3 | 36,375 | -964 | -1.3% |
| 2025 | Q2 | 36,378 | -774 | -1.1% |
| 2025 | Q1 | 36,734 | -510 | -1.0% |
| 2024 | Q4 | 36,874 | -15 | -0.8% |
| 2024 | Q3 | 37,339 | +258 | -0.6% |
| 2024 | Q2 | 37,152 | +378 | -0.4% |
| 2024 | Q1 | 37,244 | -234 | -0.8% |
| 2023 | Q4 | 36,889 | -997 | -1.2% |
| 2023 | Q3 | 37,081 | -909 | -1.1% |
| 2023 | Q2 | 36,774 | -1,028 | -1.0% |
See The Day & Zimmermann Gp's complete headcount history, including quarterly breakdowns.
Get the DataThe Day & Zimmermann Gp Employee Count by Region (2026)
North America accounts for the largest share of The Day & Zimmermann Gp's global workforce with approximately 80% of total employees, followed by Arab States and Sub-Saharan Africa.
The Day & Zimmermann Gp employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 28,558 | 80.4% |
| Arab States | 2,127 | 6.0% |
| Sub-Saharan Africa | 1,468 | 4.1% |
| South Asia | 934 | 2.6% |
| Western Europe | 438 | 1.2% |
| Northern Europe | 380 | 1.1% |
| South America | 330 | 0.9% |
| Southeast Asia | 290 | 0.8% |
| Eastern Europe | 219 | 0.6% |
| Southern Europe | 199 | 0.6% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataThe Day & Zimmermann Gp Employee Count by Department (2026)
The Day & Zimmermann Gp's employee groups are Finance and Operations (39.2%), Engineering (34.4%), and Sales and Marketing (26.4%).
The Day & Zimmermann Gp employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 13,776 | 39.2% |
| Engineering | 12,087 | 34.4% |
| Sales and Marketing | 9,301 | 26.4% |
Compare The Day & Zimmermann Gp's department mix to industry peers.
See Full DataThe Day & Zimmermann Gp Employee Salary by Region (2026)
The Day & Zimmermann Gp's average employee salary is $79,541 globally. Employees in North America receive the highest compensation. Pay is lowest in South Asia, at a median of $6,000.
The Day & Zimmermann Gp median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $81,000 |
| Western Europe | $80,000 |
| Northern Europe | $64,000 |
| Southern Europe | $36,000 |
| East Asia | $33,000 |
| Pacific Islands | $32,000 |
| Central and Western Asia | $32,000 |
| Eastern Europe | $30,000 |
| Central America and the Caribbean | $27,000 |
| North Africa | $19,000 |
| Arab States | $16,000 |
| South America | $16,000 |
| Southeast Asia | $9,000 |
| Sub-Saharan Africa | $8,000 |
| South Asia | $6,000 |
Unlock salary by role, level, and city — and compare to The Day & Zimmermann Gp's industry peers.
Unlock Salary DataThe Day & Zimmermann Gp Job Openings and Hiring Trends (2023-2026)
- The Day & Zimmermann Gp had 725 active job postings in 2026, a 27.5% increase (+222) from 2025.
- The Day & Zimmermann Gp had 503 active job postings in 2025, a 2.4% decline (-12) from 2024.
- The Day & Zimmermann Gp had 515 active job postings in 2024, a 27.3% decline (-163) from 2023.
- The Day & Zimmermann Gp had 678 active job postings in 2023, a 62.9% decline from 2022.
- Hiring velocity in 2026: 677 new roles/month, down from 695 in 2025 and 911 in 2024.
The Day & Zimmermann Gp's active job postings rose 27.5% in 2026 to 725, with new postings per month cooling from 1,214 in 2023 to 677 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataThe Day & Zimmermann Gp Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across The Day & Zimmermann Gp's workforce based on public professional data. Overall sentiment is neutral and has improved year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
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Frequently Asked Questions About The Day & Zimmermann Gp
- How fast is The Day & Zimmermann Gp growing?
- In 2026, The Day & Zimmermann Gp's headcount shrank 0.8% to 36,181 employees, down from 36,734 in 2025.
- See the full headcount history
- Where are The Day & Zimmermann Gp employees located?
- Most The Day & Zimmermann Gp employees are based in North America (80.4% of headcount), followed by Arab States and Sub-Saharan Africa.
- Explore where the workforce is based
- What is the average salary at The Day & Zimmermann Gp?
- The average employee salary at The Day & Zimmermann Gp is approximately $79.5k per year.
- Analyze the salary distribution
- How many new job postings does The Day & Zimmermann Gp open per year?
- In Q1 2026, The Day & Zimmermann Gp opened 2,030 new job postings. In 2025, The Day & Zimmermann Gp opened 8,336 new job postings — about 695 per month.
- Track hiring trends by role
- When was The Day & Zimmermann Gp founded and where is it headquartered?
- The Day & Zimmermann Gp was founded in 1901 and is headquartered in Philadelphia, Pennsylvania.
- Compare The Day & Zimmermann Gp to industry peers
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