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DSI Corporation (Diversified Services for Industry) was founded in 1983 as a contract janitorial service. Over the last two decades, DSI has expanded its business. Headquartered in Streator, Illinois, we work with a varied and prestigious list of Fortune 500 and privately held image-conscious customers who are within our service area throughout Illinois, southern Wisconsin and eastern Iowa. Our more than 200 employees provide outstanding service and support to customers in the manufacturing, distribution, education, healthcare and  banking industries.

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Patrick Gibbons President

DSI employees and their welfare are the prerequisite to the success of our company. Our long-range objective is the continuous development of a growing and prospering business through which employees and the company benefit. Every employee is a member of the DSI team. Our success as a company is built on the recognition of the efforts made by each employee. It is DSI's policy to work with all team members in a fair and friendly manner, and to treat each one with dignity and respect. Learn more about our management team and our employees.

DSI employees will also work continuously to the benefit of our customers, in an effort to improve our competitive position.

We will dedicate ourselves to conducting a growth-oriented business within an atmosphere of harmony and opportunity for the entire DSI team.

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Management team

DSI management team
The DSI management style is based on respect for customers and employees. We know we wouldn't have jobs without our customers and we wouldn't have customers without our employees.

Learn more about our unique approach.

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While many companies talk about being employee focused, very few actually live up to the ideals that transform a business/associate relationship into a true customer benefit. It takes a special company to open itself to empower employees and allow them to put their talents to work in ways that will exceed customer expectations. DSI is that company.

Learn more about the people that make our operations shine.

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DSI is committed to being the premier provider of contract janitorial service to image-conscious clientele in the marketplace. We will accomplish our mission by:
  • Delivering a consistent level of superior quality that is beyond our customers' expectations and our competitors' ability
  • Establishing a mutually beneficial partnership with our customers
  • Providing all employees the opportunity to become part of a team that rewards achievement in an atmosphere of cooperation, open communication and integrity
  • Growing strategically to allow DSI to be a stable, secure and profitable industry leader

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DSI is an active member of the Building Service Contractors Association International (BSCAI). As an integral part of this renowned organization, DSI is involved in developing and following the professional standards of governance put forth by BSCAI. Not only do we use it as our guide to being a fair and ethical company, we embrace the BSCAI code of ethics as our own. We're proud of our association with this prestigious group of professionals, and even prouder that our efforts are helping set the highest standards in the industry. Learn more about BSCAI.


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Safety is an integral part of the DSI culture. We have always beenand will always bea safety conscious company. Our employees follow the safety rules and regulations outlined in our employee handbook. (If you would like to review a copy of our handbook, please contact us). Our employees will also follow any site-specific rules that your company may have.

In addition to following the industry's best practice safety procedures, DSI employees wear personal protective equipment (PPE) when required. In the event of an injury, DSI will conduct an investigation, and share findings with customers in an effort to avoid future incidents.

We're committed to:

  • Safety awareness and vigilance
  • Continuous safety and job responsibility training
  • Open communication on all safety issues, at all levels
  • A team approach to safety and injury prevention
  • Adherence to OSHA and DSI guidelines at all times
  • A shared caring for our fellow employees' health and well-being

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