UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 6, 2015

StoneMor Partners L.P.

(Exact name of registrant as specified in its charter)

311 Veterans Highway, Suite B, Levittown, PA 19056

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code (215) 826-2800

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

StoneMor Partners L.P. hereby restates the following risk factors which are included in Item 1.A of Part I of its Annual Report on Form 10-K for the fiscal year ended December 31, 2014:

Regulatory and Legal Risks

Our operations are subject to regulation, supervision and licensing under numerous federal, state and local laws, ordinances and regulations, including extensive regulations concerning trusts/escrows, pre-need sales, cemetery ownership, funeral home ownership, marketing practices, crematories, environmental matters and various other aspects of our business.

If state laws or interpretations of existing state laws change or if new laws are enacted, we may be required to increase trust/escrow deposits or to alter the timing of withdrawals from trusts/escrows, which may have a negative impact on our revenues and cash flow.

We are required by most state laws to deposit specified percentages of the proceeds from our pre-need and at-need sales of interment rights into perpetual care trusts and generally proceeds from our pre-need sales of cemetery and funeral home products and services into merchandise trusts/escrows. These laws also determine when we are allowed to withdraw funds from those trusts/escrows. If those laws or the interpretations of those laws change or if new laws are enacted, we may be required to deposit more of the sales proceeds we receive from our sales into the trusts/escrows or to defer withdrawals from the trusts/escrows, thereby decreasing our cash flow until we are permitted to withdraw the deposited amounts. This could also reduce our cash available for distribution.

If state laws or their interpretations change, or new laws are enacted relating to the ownership of cemeteries and funeral homes, our business, financial condition and results of operations could be adversely affected.

Some states require cemeteries to be organized in the nonprofit form but permit those nonprofit entities to contract with for-profit companies for management services. If state laws change or new laws are enacted that prohibit us from managing cemeteries in those states, then our business, financial condition and results of operations could be adversely affected. Some state laws restrict ownership of funeral homes to licensed funeral directors. If state laws change or new laws are enacted that prohibit us from managing funeral homes in those instances, then our business, financial condition and results of operations could be adversely affected.

We are subject to legal restrictions on our marketing practices that could reduce the volume of our sales, which could have an adverse effect on our business, operations and financial condition.

The enactment or amendment of legislation or regulations relating to marketing activities may make it more difficult for us to sell our products and services. For example, the federal “do not call” legislation has adversely affected our ability to market our products and services using telephone solicitation by limiting whom we may call and increasing our costs of compliance. As a result, we rely heavily on direct mail marketing and telephone follow-up with existing contacts. Additional laws or regulations limiting our ability to market through direct mail, over the telephone, through Internet and e-mail advertising or door-to-door may make it difficult to identify potential customers, which could increase our costs of marketing. Both increases in marketing costs and restrictions on our ability to market effectively could reduce our revenues and could have an adverse effect on our business, operations and financial condition, as well as our ability to make cash distributions to you.

We are subject to environmental and health and safety laws and regulations that may adversely affect our operating results.

Our cemetery and funeral home operations are subject to numerous federal, state and local environmental and health and safety laws and regulations. We may become subject to liability for the removal of hazardous substances and solid waste under CERCLA and other federal and state laws. Under CERCLA and similar state laws, strict, joint and several liability may be imposed on various parties, regardless of fault or the legality of the original disposal activity. Our funeral home, cemetery and crematory operations include the use of some materials that may meet the definition of “hazardous substances” under CERCLA or state laws and thus may give rise to liability if

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released to the environment through a spill or release. We cannot assure you that we will not face liability under CERCLA or state laws for any environmental conditions at our facilities, and we cannot assure you that these liabilities will not be material. Our cemetery and funeral home operations are subject to regulation of underground and above ground storage tanks and laws managing the disposal of solid waste. If new requirements under local, state or federal laws were to be adopted, and were more stringent than existing requirements, new permits or capital expenditures may be required.

Our funeral home operations are generally subject to federal and state laws and regulations regarding the disposal of medical waste, and are also subject to regulation by federal, state or local authorities under the EPCRA. We are required by EPCRA to maintain and report to the regulatory authorities, if applicable thresholds are met, a list of any hazardous chemicals and extremely hazardous substances, which are stored or used at our facilities.

Our crematory operations may be subject to regulation under the federal Clean Air Act and any analogous state laws. If new regulations applicable to our crematory operations were to be adopted, they could require permits or capital expenditures that could increase our costs of operation and compliance. We are also subject to the Clean Water Act and corresponding state laws, as well as local requirements applicable to the treatment of sanitary and industrial wastewaters. Many of our funeral homes discharge their wastewaters into Publicly Operated Treatment Works, or POTWs, and may be subject to applicable limits as to contaminants that may be included in the discharge of their wastewater. Our cemeteries typically discharge their wastewaters from sanitary use and maintenance operations conducted onsite into septic systems which are regulated under state and local laws. If there are violations of applicable local, state or federal laws pertaining to our discharges of wastewaters, we may be subject to penalties as well as an obligation to conduct required remediation.

Litigation or legal proceedings could expose us to significant liabilities and damage our reputation.

From time to time, we are party to various claims and legal proceedings, including, but not limited to, employment, cemetery or burial practices, and other litigation. We are subject to class or collective actions under the wage and hours provisions of the Fair Labor Standards Act, including, but not limited to, national and state class or collective actions, or putative class or collective actions. Generally, plaintiffs in class action litigation may seek to recover amounts, which may be indeterminable for some period of time although potentially large. Adverse outcomes in the pending cases may result in monetary damages or injunctive relief against us, as litigation and other claims are subject to inherent uncertainties. For each of our outstanding legal matters, we evaluate the merits of the case, our exposure to the matter, possible legal or settlement strategies, and the likelihood of an unfavorable outcome. We base our assessments, estimates and disclosures on the information available to us at the time. Actual outcomes or losses may differ materially from assessments and estimates. Costs to defend litigation claims and legal proceedings and the cost of actual settlements, judgments or resolutions of these claims and legal proceedings may negatively affect our business and financial performance. We hold insurance policies that may reduce cash outflows with respect to an adverse outcome of certain litigation matters, but exclude certain claims, such as claims arising under the Fair Labor Standards Act. To the extent that our management will be required to participate in or otherwise devote substantial amounts of time to the defense of these matters, such activities would result in the diversion of our management resources from our business operations and the implementation of our business strategy, which may negatively impact our financial position and results of operations. Any adverse publicity resulting from allegations made in litigation claims or legal proceedings may also adversely affect our reputation, which in turn, could adversely affect our results of operations.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: July 6, 2015