For the three and nine months ended September 30, 2020, consolidated operating income totaled $39.8 million and $68.0 million, compared to $31.2 million and $75.0 million, respectively, for the same periods of 2019. In addition to the results of our operating segments (further described within the Asset-Based Segment Results and the Asset-Light Results sections of MD&A), the year-over-year comparisons of consolidated operating results were impacted by investments in innovative technology, as described in the following paragraphs, costs for certain nonunion performance-based incentive plans, and expenses accrued for discretionary nonunion wage and incentive payments (previously discussed in the Fourth Quarter 2020 Update to our COVID-19 Business Response within the General Section of MD&A). For the three and nine months ended September 30, 2020, compared to the same periods of 2019, expenses for certain nonunion performance-based incentive plans increased $8.5 million and $7.1 million, respectively. An additional $7 million was accrued during the three months ended September 30, 2020 related to the previously disclosed discretionary nonunion wage and incentive payments which are probable of being made in fourth quarter 2020.
Innovative technology costs related to the freight handling pilot test program at ABF Freight impacted consolidated results by $6.0 million (pre-tax), or $4.6 million (after-tax) and $0.17 per diluted share, for third quarter 2020, compared to $4.7 million (pre-tax), or $3.6 million (after-tax) and $0.14 per diluted, for third quarter 2019. For the nine months ended September 30, 2020, these costs impacted consolidated results by $15.3 million (pre-tax), or $11.8 million (after-tax) and $0.45 per diluted share, compared to $11.1 million (pre-tax), or $8.5 million (after-tax) and $0.32 per diluted share, for the same period of 2019. The freight handling pilot test program at ABF Freight is discussed in the Asset-Based Operating Expenses section of Asset-Based Segment Results within Asset-Based Operations.
The loss reported in the “Other and eliminations” line, which totaled $2.7 million and $10.4 million for the three and nine months ended September 30, 2020, respectively, compared to $4.1 million and $16.5 million, respectively, for the same periods of 2019, includes expenses related to investments to develop and design various ArcBest technology and innovations as well as expenses related to shared services for the delivery of comprehensive transportation and logistics services to ArcBest’s customers. The $1.4 million and $6.1 million decreases in the loss reported in “Other and eliminations” for the three and nine months ended September 30, 2020, respectively, compared to the same periods of 2019, reflect lower technology costs and reduced shared service operating expenses as we continued to manage these costs through the pandemic. We expect the loss reported in “Other and eliminations” for fourth quarter 2020 to approximate $3 million and to be approximately $13 million for full year 2020.
In addition to the above items, consolidated net income and earnings per share were impacted by nonunion defined benefit pension expense in 2019, including settlement and termination expense, and changes in the cash surrender value of variable life insurance policies, both of which are reported below the operating income line in the consolidated statements of operations. A portion of our variable life insurance policies have investments, through separate accounts, in equity and fixed income securities and, therefore, are subject to market volatility. Changes in the cash surrender value of life insurance policies increased net income by $1.5 million, or $0.06 per diluted share, and $0.3 million, or $0.01 per diluted share, for the three and nine months ended September 30, 2020, respectively, compared to an increase in net income of $0.6 million, or $0.02 per diluted share, and $2.7 million, or $0.10 per diluted share, respectively, for the same prior-year periods. Consolidated after-tax pension expense, including settlement and termination expense, recognized for the nonunion defined benefit pension plan totaled $6.0 million, or $0.23 per diluted share, and $7.7 million, or $0.29 per diluted share, for the three and nine months ended September 30, 2019, respectively, with no comparable expense for the three and nine months ended September 30, 2020, as termination of the nonunion defined benefit pension plan was completed as of December 31, 2019. (For further discussion of settlement charges and termination expense related to the nonunion defined benefit pension plan for the three and nine months ended September 30, 2019, see Note G to our consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.)
Consolidated Adjusted Earnings Before Interest, Taxes, Depreciation, and Amortization (“Adjusted EBITDA”)
We report our financial results in accordance with generally accepted accounting principles (“GAAP”). However, management believes that certain non-GAAP performance measures and ratios, such as Adjusted EBITDA, utilized for internal analysis provide analysts, investors, and others the same information that we use internally for purposes of assessing our core operating performance and provides meaningful comparisons between current and prior period results, as well as important information regarding performance trends. Accordingly, using these measures improves comparability in analyzing our performance because it removes the impact of items from operating results that, in management's opinion, do not reflect our core operating performance. Management uses Adjusted EBITDA as a key