Day & Zimmermann Information
Summary
Day & Zimmermann is a private company that has been in the industry for 125 years. The company currently specializes in the Construction, Diversified construction areas. The position of the Chairman & CEO is occupied by Harold L Yoh. Its headquarters is located at Philadelphia, Pennsylvania, USA. The number of employees ranges from 10K to 50K. The annual revenue of Day & Zimmermann varies between 1.0B and 5.0B. To connect with Day & Zimmermann employee register on SignalHire.
Organization Website | dayzim.com |
Social Links |    |
Phone Number | 215-299-8000 |
Industries | |
Headquarters Location | 1500 Spring Garden Street, Philadelphia, PA, 19130 US |
Employees Size | 10000+ employees |
Specialties | Construction, Engineering, Staffing, Security, Defense, Operations & Maintenance |
SIC Code | 6500 |
DMA Code | Delaware Valley |
Founded | 1901 |
Estimated Annual Revenue | $1.0B - 5.0B |
Operating Status | Independent Company |
Competitors
Founded | Type | Employees | Revenue | Funding | |
|---|---|---|---|---|---|
| 1978 | Privately Held | 250 - 500 | 35.5M | $2M | |
| 06/1962 | Privately Held | 25 - 100 | 16.6M | $5M | |
| 1935 | Privately Held | 1.0K - 5.0K | 670M | $33.5M | |
| 1957 | Privately Held | 1.0K - 5.0K | 270.1M | $0 |
Estimated Website Traffic
The chart shows a growth in traffic to the dayzim.com website. In December, traffic increased to 26426, compared to 25441 in the previous month. The highest traffic in 2025 was recorded in July, reaching 47787 visits.
Employees Turnover 4 quarter 2025
Number of employees switched from or switched to
Length of Employment
Employee tenure at Day & Zimmermann shows a diverse range of experience levels:
7% for 1–2 years9% for 3–4 years13% for 5–7 years20% for 8–10 years51% have over 11 years of service at Day & ZimmermannEx-employees positions
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