OLG Network

Overfield Leadership Group (OLG) designs and implements evidence-based solutions for the pressing leadership challenges that 21st century executives, teams, and organizations face.

OLG’s cadre of experienced consultants bring both business and psychology backgrounds to confidential and objective thought partnership, operating as a network of professionals that collaborates to provide bespoke solutions.

Some professionals in the OLG Network include:

Carol Marsh

Carol Marsh draws upon a diverse 30 year career as a Human Resources and Talent professional to help leaders become learners and build high performance cultures.

Carol partners with executives to solve their most pressing problems by applying well-honed business acumen, strategic thinking, change management and facilitation skills.


Carol served as an internal consultant and HR Business Partner to organizations—including Lincoln Financial, Sunoco, and 7-Eleven—in a range of industries: for-profit and not-for-profit; medium sized privately held businesses and large multinational corporations in banking, higher education, retail, petroleum/petrochemicals, transportation and financial services.

She designed and delivered corporate leadership development programs, partnered with leaders to improve the performance of their teams, and advised executives on a wide range of HR and talent-related issues, such as organization design and corporate restructuring.  Sought-out for her technical expertise on the “people-side” of driving business results, Carol added value as a sounding board and thought partner when executives had to make big-bet decisions. She has been the recipient of a national award for employee development and multiple excellence awards in the organizations where she has worked.

In addition to consulting expertise, Carol has experience in corporate learning and organizational development.  For example, she has created and facilitated interpersonal and technical training for 4,700 retail outlets, and five refining facilities, developed leading edge mobile training, and provided franchisee and dealer business orientation.

Earlier in her career, Carol managed an HR services team of 60 people supporting an employee base of 8,400 in four states.  Her team created a new model of HR service delivery that included recruiting, employee development, compensation and training.


Carol builds trusted relationships with her clients that allow them to identify desired outcomes, build a plan and define measurable mileposts of success.

She is a master facilitator, having designed and implemented leadership development programs for thousands of employees based on assessments and curricula in which she is certified, such as Crucial Conversations, Strength Deployment Inventory, DISC, Situational Leadership and Trusted Advisor.  Carol is also highly experienced as a process facilitator, particularly in the areas of senior leadership team meetings, strategy sessions and team offsites.


Chris CriswellChris Criswell

Chris focuses on using assessment tools to grow leaders and predict meaningful workplace outcomes. She provides research and consulting services around talent management strategy, leadership assessment and coaching, employee selection, succession planning, and performance modeling.

She enjoys working with her clients to design and author feedback reports and coaching materials, integrating across multiple sources and assessments to create a holistic, person-centered view of a leader.

Chris also provides counsel on research design, test validation techniques, and issues around integrating assessments into existing internal processes. She advises clients regarding employment law concerns, bringing in other legal resources where appropriate, and also conducts non-financial due diligence assessments for M&A and venture capital prospects.

Chris served as Director of Research & Development for FurstPerson, a boutique consulting firm specializing in innovative assessment usage within the contact center industry. She also served as an HR Strategist for JP Morgan Chase and Washington Mutual banks, and held several roles within the research department at Hogan Assessment Systems.

She earned her Ph.D. in Industrial/Organizational Psychology from The University of Tulsa, and holds a BA in Psychology and International Studies from Drury University in Springfield, MO. Chris is a frequent presenter and speaker at industry conferences, and an author of numerous technical manuals and reports for her clients.


Chris has crafted a blended approach to consulting, forged through experiences as both an internal and external consultant. These experiences have helped her hone an ability to communicate across organizational levels, and to influence without authority. Her clients have spanned sizes and markets across multiple industries, including:

  • Financial Services
  • On- & Off-shore Contact Centers
  • Telecommunications
  • Public and Private Utilities
  • Retail
  • Service & Hospitality
  • Pharmaceuticals
  • Union and non-Union Trade & Labor
  • Service Offerings

Chris has experience developing, validating, and interpreting many assessments designed to measure individual differences, explain behaviors, uncover core values and blind spots, and predict workplace outcomes. Her past work has included efforts that target the following:

  • Leadership Development
  • Succession Planning
  • Job / Work Analysis
  • Merger & Acquisition Transitioning
  • 360° and Multi-rater Tools
  • Competency Modeling
  • Data Analysis / Psychometrics
  • Training Evaluation