Exhibit 99.1

O S H K O S H  C O R P O R A T I O N

OSHKOSH CORPORATION REPORTS FOURTH FISCAL
QUARTER AND FISCAL 2013 RESULTS

Fiscal 2013 Adjusted EPS1 of $3.74

Fiscal 2013 Free Cash Flow1 of $386 million

Reinstates Quarterly Cash Dividend at $0.15 per share

Fiscal 2014 EPS Estimate Range of $3.10 to $3.40

OSHKOSH, WI – (October 31, 2013) – Oshkosh Corporation (NYSE: OSK) today reported fiscal 2013 fourth quarter net income of $35.7 million, or $0.40 per diluted share, compared to $83.7 million, or $0.91 per diluted share, in the fourth quarter of fiscal 2012. All results are for continuing operations attributable to Oshkosh Corporation, unless stated otherwise.

Results for the fourth quarter of fiscal 2013 were adversely impacted by a $5.5 million after-tax non-cash impairment charge related to an intangible asset in the access equipment segment and after-tax costs of $2.4 million related to the extension of a union contract with defense segment production employees. Results for the fourth quarter of fiscal 2012 included after-tax non-cash charges of $4.5 million related to the adjustment of stock-based compensation, after-tax charges of $2.2 million associated with the curtailment of pension and other postretirement benefit plans and discrete tax benefits of $31.0 million. Excluding these items1, fiscal 2013 fourth quarter adjusted net income was $43.6 million, or $0.49 per diluted share, compared to $59.5 million, or $0.64 per diluted share, in the fourth quarter of fiscal 2012.

1  This press release refers to GAAP (U.S. generally accepted accounting principles) and non-GAAP financial measures. Oshkosh Corporation believes that the non-GAAP measures provide investors a useful comparison of the Company’s performance to prior period results. These non-GAAP measures may not be comparable to similarly titled measures disclosed by other companies. A reconciliation of these non-GAAP financial measures to the most comparable GAAP measures can be found under the caption “Non-GAAP Financial Measures” in this press release.

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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Consolidated net sales in the fourth quarter of fiscal 2013 were $1.73 billion, a decrease of 15.8 percent compared to the prior year fourth quarter. Higher sales in the Company’s non-defense segments were more than offset by lower defense segment sales.

Consolidated operating income in the fourth quarter of fiscal 2013 was $65.2 million, or 3.8 percent of sales, compared to $98.3 million, or 4.8 percent of sales, in the prior year fourth quarter. Excluding the items described above, adjusted consolidated operating income1 in the fourth quarter of fiscal 2013 was $78.0 million, or 4.5 percent of sales, compared to $108.9 million, or 5.3 percent of sales, in the prior year fourth quarter. Operating income margins in the fourth quarter of fiscal 2013 declined primarily as a result of lower volume in the Company’s defense segment and higher corporate operating expenses, offset in part by favorable performance in the Company’s access equipment and commercial segments.

“We delivered fourth quarter results that exceeded the high end of our most recently announced estimated earnings range, finishing up a year that significantly exceeded our initial expectations,” said Charles L. Szews, Oshkosh Corporation chief executive officer. “Continued strong demand for access equipment in North America and improved demand for concrete mixers in the U.S. partially offset a significant sales decline in our defense segment in the fourth quarter.

“The power of the Company’s MOVE strategy was evident in fiscal 2013, as each non-defense segment – access equipment, fire & emergency and commercial – increased operating income margins over the prior year. We believe we are on track to achieve our fiscal 2015 earnings per share target range of $4.00 to $4.50.

“Today, we introduced our initial outlook for fiscal 2014, with earnings expectations of $3.10 to $3.40 per share. We expect improved performance in fiscal 2014 in each of our non-defense segments as we continue to implement our MOVE initiatives and take advantage of expected recovering markets. While our growth expectations in these segments will likely not be enough to overcome the large reduction in defense segment revenues and operating income in fiscal 2014 that we’ve been discussing over the past year, they do signal that we are confident in our underlying businesses and the progress we are making with our MOVE strategy. Our current outlook exceeds our internal earnings target for fiscal 2014 as of our September 2012 Analyst Day.

“Our performance in fiscal 2013, as well as the confidence we have in our business model, give us reason to believe that now is an appropriate time to reinstate a dividend. I’m pleased to say that our Board of Directors shares in that belief and today we are announcing a quarterly cash dividend of $0.15 per share payable on December 2 to shareholders of record on November 18,” added Szews.

Factors affecting fourth quarter results for the Company’s business segments included:

Access Equipment – Access equipment segment sales increased 8.9 percent to $780.6 million for the fourth quarter of fiscal 2013 compared to the prior year fourth quarter. The increase was principally the result of higher unit volumes in North America, the realization of previously announced price increases and higher aftermarket parts & service sales, which more than offset lower sales volume in Australia.

In the fourth quarter of fiscal 2013, access equipment segment operating income increased 36.6 percent to $81.2 million, or 10.4 percent of sales, compared to prior year fourth quarter operating income of $59.5 million, or 8.3 percent of sales. Included in access equipment results for the fourth quarter of fiscal 2013 was a $9.0 million non-cash impairment charge related to an intangible asset. Excluding the impairment charge, adjusted operating income1 in the fourth quarter of fiscal 2013 was $90.2 million, or 11.6 percent of sales. The increase in

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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operating income was primarily the result of higher sales volume and the realization of previously announced price increases, as well as product and process cost reductions.

Defense – Defense segment sales decreased 46.1 percent to $513.8 million for the fourth quarter of fiscal 2013 compared to the prior year fourth quarter. The decrease in sales was primarily due to an expected decline in sales to the U.S. Department of Defense (DoD) under the Company’s Family of Medium Tactical Vehicle and Family of Heavy Tactical Vehicle programs, as well as lower aftermarket parts sales, offset in part by revenue associated with the delivery of Joint Light Tactical Vehicle (JLTV) test vehicles under the JLTV Engineering, Manufacturing & Development contract and higher international sales of MRAP All-Terrain Vehicles.

In the fourth quarter of fiscal 2013, defense segment operating income decreased 82.0 percent to $11.2 million, or 2.2 percent of sales, compared to prior year fourth quarter operating income of $62.0 million, or 6.5 percent of sales. Included in defense segment results for the fourth quarter of fiscal 2013 were costs of $3.8 million related to the extension of a union contract with production employees. Excluding the union contract costs, adjusted operating income1 in the fourth quarter of fiscal 2013 was $15.0 million, or 2.9 percent of sales. The decrease in operating income was largely due to lower sales volume.

Fire & Emergency – Fire & emergency segment sales for the fourth quarter of fiscal 2013 increased 6.6 percent to $232.0 million compared to the prior year quarter. The increase in sales primarily reflected the recognition of sales on a multi-unit international fire apparatus order.

In the fourth quarter of fiscal 2013, fire & emergency segment operating income decreased 8.8 percent to $9.2 million, or 4.0 percent of sales, compared to prior year fourth quarter operating income of $10.0 million, or 4.6 percent of sales. The decrease in operating income for the fourth quarter of fiscal 2013 was largely the result of an adverse product mix.

Commercial – Commercial segment sales increased 15.4 percent to $209.4 million in the fourth quarter of fiscal 2013 compared to the prior year quarter. The increase in sales was primarily attributable to increased demand for concrete mixers in the U.S.

In the fourth quarter of fiscal 2013, commercial segment operating income increased 70.9 percent to $15.7 million, or 7.5 percent of sales, compared to $9.2 million, or 5.1 percent of sales, in the prior year quarter. The increase in operating income was primarily a result of the higher volume and improved cost performance.

Corporate – Corporate operating expenses increased $9.6 million to $52.1 million for the fourth quarter of fiscal 2013 compared to the prior year quarter. Adjusted corporate operating expenses1 increased $17.7 million compared to the fourth quarter of fiscal 2012. The increase in adjusted corporate operating expenses in the fourth quarter of fiscal 2013 compared to the fourth quarter of fiscal 2012 was due to higher share-based compensation expense, largely as a result of the impact of an increase in the Company’s share price on variable share-based compensation, higher information technology spending and expenses associated with certain September 2013 stock-based compensation awards.

Interest Expense Net of Interest Income – Interest expense net of interest income decreased $5.6 million to $12.5 million in the fourth quarter of fiscal 2013 compared to the prior year quarter as a result of lower interest rates and the recognition of $2.9 million of interest income upon receipt of payments on a note receivable from a customer in the fourth quarter of fiscal 2013. In addition, in the fourth quarter of fiscal 2012, the Company recorded a charge of $2.1 million as a result of the refinancing of the Company’s credit agreement.

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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Provision for Income Taxes – The Company recorded income tax expense of $16.0 million in the fourth quarter of fiscal 2013, or 31.4 percent of pre-tax income, compared to a benefit from income taxes of $3.2 million in the prior year quarter. Tax expense for the fourth quarter of fiscal 2012 was favorably impacted by discrete tax benefits totaling $31.0 million related to the September 2012 settlement of an income tax audit, benefits of a European tax incentive, a reduction in valuation reserves and the expiration of statutes of limitations.

Share Repurchases – During the fourth quarter of fiscal 2013, the Company repurchased 712,105 shares of its Common Stock at an aggregate cost of $32.8 million. The Company has repurchased a total of $202 million of its Common Stock under its previously announced $300 million share repurchase program. Earnings per share in the fourth quarter of fiscal 2013 improved $0.02 compared to the prior year fourth quarter as a result of lower average diluted shares outstanding.

Full-Year Results

The Company reported net sales for the fiscal year ended September 30, 2013 of $7.67 billion and net income of $316.3 million, or $3.53 per diluted share. This compares with net sales of $8.14 billion and net income of $245.2 million, or $2.67 per diluted share in fiscal 2012. Adjusted results1 for fiscal 2013 were net income of $334.6 million, or $3.74 per diluted share, compared to $211.3 million, or $2.30 per diluted share, in fiscal 2012. The increase in adjusted results in fiscal 2013 was largely attributable to improved performance in the Company’s access equipment segment and higher margins associated with international defense sales, offset in part by higher share-based compensation expense, largely as a result of the impact of the increase in the Company’s share price on variable, share-based compensation. As a result of strong operating results during fiscal 2013, the Company generated free cash flow1 of $386 million. Earnings per share in fiscal 2013 improved $0.11 compared to fiscal 2012 as a result of lower average diluted shares outstanding.

Fiscal 2014 Expectations

The Company also announced its fiscal 2014 earnings per share expectations of $3.10 to $3.40 on projected net sales of $6.6 billion to $6.9 billion. The Company expects a reduction in DoD spending to significantly affect sales in fiscal 2014 driving consolidated sales down from $7.7 billion in fiscal 2013. The Company expects that the decrease in defense segment sales will be partially offset by an increase in sales in the Company’s non-defense segments as a result of improved end markets. The Company expects consolidated operating income to be between $455 million and $490 million as a result of lower sales expectations, partially offset by benefits of the Company’s MOVE initiatives.

Dividend Announcement

The Company’s Board of Directors declared a quarterly cash dividend of $0.15 per share of Common Stock. The dividend will be payable December 2, 2013 to shareholders of record as of November 18, 2013.

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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Conference Call

The Company will comment on its fiscal 2013 fourth quarter earnings and its full-year fiscal 2014 outlook during a conference call at 9:30 a.m. EDT this morning. Slides for the call will be available on the Company’s website beginning at 7:00 a.m. EDT this morning. The call will be webcast simultaneously over the Internet. To access the webcast, listeners can go to www.oshkoshcorporation.com at least 15 minutes prior to the event and follow instructions for listening to the webcast. An audio replay of the call and related question and answer session will be available for 12 months at this website.

Forward-Looking Statements

This press release contains statements that the Company believes to be “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical fact, including, without limitation, statements regarding the Company’s future financial position, business strategy, targets, projected sales, costs, earnings, capital expenditures, debt levels and cash flows, and plans and objectives of management for future operations, are forward-looking statements. When used in this press release, words such as “may,” “will,” “expect,” “intend,” “estimate,” “anticipate,” “believe,” “should,” “project” or “plan” or the negative thereof or variations thereon or similar terminology are generally intended to identify forward-looking statements. These forward-looking statements are not guarantees of future performance and are subject to risks, uncertainties, assumptions and other factors, some of which are beyond the Company’s control, which could cause actual results to differ materially from those expressed or implied by such forward-looking statements. These factors include the cyclical nature of the Company’s access equipment, commercial and fire & emergency markets, especially with the current tepid outlook for the U.S. and European economic recoveries and the struggles the U.S. government has encountered trying to resolve budgetary and debt issues; the strength of emerging market growth and projected adoption rate of work at height machinery; the expected level and timing of the DoD procurement of products and services and funding thereof; risks related to reductions in government expenditures in light of U.S. defense budget pressures, sequestration and an uncertain DoD tactical wheeled vehicle strategy, including the Company’s ability to successfully manage the cost reductions required as a result of the significant projected decrease in sales levels in the defense segment; the Company’s ability to win a U.S. JLTV production contract award; the Company’s ability to increase prices to raise margins or offset higher input costs; increasing commodity and other raw material costs, particularly in a sustained economic recovery; risks related to facilities consolidation and alignment, including the amounts of related costs and charges and that anticipated cost savings may not be achieved; the duration of the ongoing global economic weakness, which could lead to additional impairment charges related to many of the Company’s intangible assets and/or a slower recovery in the Company’s cyclical businesses than Company or equity market expectations; risks related to the collectability of receivables, particularly for those businesses with exposure to construction markets; the cost of any warranty campaigns related to the Company’s products; risks related to production or shipment delays arising from quality or production issues; risks associated with international operations and sales, including foreign currency fluctuations and compliance with the Foreign Corrupt Practices Act; the Company’s ability to comply with complex laws and regulations applicable to U.S. government contractors; and risks related to the Company’s ability to successfully execute on its strategic road map and meet its long-term financial goals. Additional information concerning these and other factors is contained in the Company’s filings with the Securities and Exchange Commission, including the Form 8-K filed today. All forward-looking statements speak only as of the date of this press release. The Company assumes no obligation, and disclaims any

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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obligation, to update information contained in this press release. Investors should be aware that the Company may not update such information until the Company’s next quarterly earnings conference call, if at all.

About Oshkosh Corporation

Oshkosh Corporation is a leading designer, manufacturer and marketer of a broad range of specialty access equipment, commercial, fire & emergency and military vehicles and vehicle bodies. Oshkosh Corporation manufactures, distributes and services products under the brands of Oshkosh®, JLG®, Pierce®, McNeilus®, Jerr-Dan®, Frontline™, CON-E-CO®, London® and IMT®. Oshkosh products are valued worldwide in businesses where high quality, superior performance, rugged reliability and long-term value are paramount. For more information, log on to www.oshkoshcorporation.com.

®, TM All brand names referred to in this news release are trademarks of Oshkosh Corporation or its subsidiary companies.

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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OSHKOSH CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Unaudited; in millions)

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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OSHKOSH CORPORATION

EARNINGS (LOSS) PER SHARE

(Unaudited)

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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OSHKOSH CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited; in millions)

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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OSHKOSH CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited; in millions)

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Oshkosh Corporation Reports Results for Fiscal 2013 Fourth Quarter

September 30, 2013

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OSHKOSH CORPORATION

SEGMENT INFORMATION

(Unaudited; in millions)