Recognition

With 100+ years experience managing complex outsourced services for some of the largest companies and government groups, Day & Zimmermann delivers the innovative solutions our customers need to overcome their toughest challenges. Our most recent recognition and achievements include:

Ranking & Awards

 Previous awards include:

  • #1 Operations & Maintenance Contractor in Power Engineering News-Record 
  • #7 Top Power Contractors Engineering News-Record 
  • #98 Top Global Defense Contractors Defense News
  • #1 Top Recruitment Process Outsourcing HROToday
  • #8 Top Managed Service Programs HROToday
  • #1 Operations & Maintenance Contractor in Power according to Engineering News-Record (September, 2012)
  • #15 among Top Chemical Plants Contractors according to Engineering News-Record (September, 2012)
  • #3 among Top Mid-Market RPO (Recruitment Process Outsourcing) Providers (Yoh) according to HRO Today (September, 2012)
  • #140 among Top Global Contractors according to Engineering News-Record (August, 2012)
  • #61 among Top Green Design Firms according to Engineering News-Record (July, 2012)
  • #5 among Top Design Firms in Chemical Plants according to Engineering News-Record (July, 2012)
  • #9 among Top Design Firms in Industrial Process according to Engineering News-Record (July, 2012)
  • #116 among Top Design Firms according to Engineering News-Record (July, 2012)
  • #99 among the Top 100 Global Defense Contractors according to Defense News (June, 2012)
  • #34 among Top Contractors according to Engineering News-Record (May, 2012)
  • #4 among Top Power Contractors according to Engineering News-Record (May, 2012)
  • #186 among Largest Private Companies according to Forbes (November, 2011)
  • #1 Operations & Maintenance Contractor in Power according to Engineering News-Record (September, 2011)
  • #93 among the Top 100 Global Defense Contractors according to Defense News (August, 2011)
  • #2 among Top RPO (Recruitment Process Outsourcing) Providers (Yoh) in projects/on demand category according to HRO Today (August, 2011) 
  • #5 among Top Managed Services Programs (Yoh) according to HRO Today (June, 2011)
  • The Association of Union Constructors (TAUC) Thomas J. Reynolds Award for excellence in construction safety (May, 2011)
  • #29 among the Largest U.S. Staffing Firms (Yoh) according to Staffing Industry Analysts (May, 2011)
  • #5 among Top Design Firms in Chemical Plants according to Engineering News-Record (May, 2011)
  • #12 among Top Design Firms in Industrial Process according to Engineering News-Record (May, 2011)
  • #20 among Top Design Firms in Government according to Engineering News-Record (May, 2011)
  • #35 among Top Contractors according to Engineering News-Record (May, 2011)
  • #5 among Top Power Contractors according to Engineering News-Record (May, 2011)
  • 2010 Thomas J. Reynolds Award for construction safety and health from The Association of Union Constructors (March, 2011)