Delivering the best value to customers — safely 


Day & Zimmermann's subsidiary, Day & Zimmermann NPS®, is one of the nation's leading union labor contractors solely dedicated to performing a full array of maintenance, modification, and construction services at nuclear and fossil-fired power plants nationwide.

Total Cost of Ownership: To provide customers with a lower total cost of ownership for their generating assets, Day & Zimmermann NPS focuses on multi-site, system-wide customer partnerships.

Continuous Improvement: By transforming the traditional approach to the maintenance and modification services, Day & Zimmermann NPS has systematically improved both efficiency and safety. Higher craft worker productivity results in reduced customer costs, leading to the best value for Day & Zimmermann NPS customers.

Safety:  With safety as its number one value, Day & Zimmermann NPS is renowned for actively driving its safety culture through training and reinforcement. Day & Zimmermann NPS' safety process is based on the Construction Industry Institute's Zero Injury Philosophy. Led by the company president and championed by senior management, Day & Zimmermann NPS' program is embraced and driven by site management and craft personnel teams, and clearly focuses on driving workplace injuries, illnesses, and accidents to ZERO.