EMPLOYMENT AGREEMENT

Exhibit 10.ss

EMPLOYMENT AGREEMENT

THIS EMPLOYMENT AGREEMENT, made and entered into as of the 1^st day of January 2001, by and between QUAKER CHEMICAL CORPORATION, a Pennsylvania corporation (hereinafter referred to as “QUAKER”), and MARK A. HARRIS (hereinafter referred to as “EXECUTIVE”).

BACKGROUND

EXECUTIVE has been employed with Quaker Chemical Europe B.V., a Quaker affiliated company, at various positions including, most recently, as its Regional Industry Manager Steel. QUAKER now wishes to employ EXECUTIVE as Vice President and Global Industry Leader, Steel and Fluid Power, and EXECUTIVE wishes to be employed by QUAKER in that position.

NOW, THEREFORE, in consideration of the mutual promises and covenants herein contained, and intending to be legally bound hereby, the parties hereto agree as follows:

extension or renewal thereof. The rate of salary will be reviewed on an annual basis consistent with QUAKER’s then current practice for reviewing officers’ salaries and performance. Addendum 1 also contains terms and benefits of your employment with QUAKER. QUAKER and EXECUTIVE wish to apply for the Dutch 30% ruling (Article 15(a)(i) sub k 1964 Dutch Wage Tax Act), with regard to EXECUTIVE’s salary payment option dated January 1, 2001.

EXECUTIVE with reasonable out-placement assistance and a severance payment (contingent upon EXECUTIVE executing a form of release satisfactory to QUAKER) that shall be equal to twelve (12) months’ base salary calculated at EXECUTIVE’s then current rate.

IN WITNESS WHEREOF, QUAKER has caused this Employment Agreement to be signed by its President, thereunto duly authorized, and its corporate seal to be hereunto affixed and attested by its Corporate Secretary, and EXECUTIVE has hereunto set his hand and seal all as of the day and year first above written.

ADDENDUM 1

Employment Agreement dated as of January 1, 2001

Mr. Mark A. Harris

SUMMARY OF GENERAL TERMS OF EMPLOYMENT

EXECUTIVE’s annual base salary will amount to Dfl. 300,000 gross (subject to applicable withholding) as per January 1, 2001, which will be paid in 12 monthly installments of Dfl. 25,000 gross (subject to applicable withholding).

Under the conditions of the 30% tax rule, you may earn an extra tax-free amount up to an amount equal to your base salary multiplied by 30/70. The conditions under the 30% tax rule are guaranteed until December 31, 2005. After this period, your salary level will be subject to discussion.

EXECUTIVE will be entitled to an annual incentive bonus package to be established at 0 up to a maximum of 55% of base annual salary (annual salary defined as monthly gross salary x 12).

Under the Long Term Incentive Plan, EXECUTIVE will participate at Level 1 with the awards to be annually approved by the Compensation and Management Development Committee of the Board of Directors.

Except for payments made that are the responsibility of Quaker pursuant to the express terms of the Employment Agreement (and this summary of the general terms of employment), EXECUTIVE shall be responsible for the payment of all withholding taxes, social security payments, and other applicable governmental taxes, charges, or payments.

The EXECUTIVE is eligible for a company automobile for business and personal use consistent with the Quaker Chemical, B.V. policy applicable to such benefit as the same may be revised from time to time.

In accordance with Quaker’s policy, EXECUTIVE will be entitled to 100% reimbursement of telephone expenses upon receipt of the PTT bill. If there should be a change in the Dutch tax law, the new legislation will be applied.

EXTRA PAYMENT ON THE OCCASION OF RETIREMENT/EARLY RETIREMENT. On the occasion of retirement at the age of 65 or entrance in the early retirement, the EXECUTIVE will receive an extra payment of one month gross salary; possible taxes will be deducted.

Individual Health Insurance. Quaker has effected an Individual Health Insurance for EXECUTIVE with “Nationale Nederlanden.” In principle, there is a 100% coverage. The package also includes a basic dentist insurance; the premium is fully paid by Quaker.

Business Travel Accident Insurance. The Business Travel Accident Insurance covers all employees in case of accident while traveling on company business. The principal sum of Accidental Death and Dismemberment Insurance is $100,000.

Apart from this there is a “24 hour Collective Accident/Disability Insurance” that provides coverage for all employees equal to a maximum of three times the yearly income (basic salary plus holiday allowance and 10% bonus).

Both policies contain certain exclusions.

Travel (Luggage) Insurance. Luggage of employees traveling abroad (world coverage) is insured to a maximum of Dfl. 5,000.— per occasion split up into:

SUPPLEMENTARY DISABILITY INSURANCE. An additional Disability Insurance has been arranged since the Government Disability Insurance covers in case of a 100% disablement annual salaries up to a maximum of 70% of Dfl. 81,158.— (for 1999) only. After 24 months of full disablement, the employee will receive a benefit of 80% of 12 x the monthly salary + holiday allowance + a 13th month. The premium is fully paid by Quaker. The policy may exclude certain “high risk” factors depending on medical (non) acceptance.

INCOME DURING SICKNESS AND PERMANENT DISABLEMENT. Employees who comply with the regulation of the Sickness Benefits Act/Disablement Insurance Act will, in case of a total disablement to work because of sickness, receive an addition to 100% net income (including bonus and holiday allowance) during and in total for a maximum period of 24 months.

AOW/AnW/AWBZ

The premiums for the Dutch AOW, AnW, and AWBZ are included in EXECUTIVE’S salary.

WAO/WW

Quaker will pay the employer’s part and employee’s part of the WW and WAO premium directly to the respective institute (GAK). The employee part will be withheld from EXECUTIVE’s salary. Each year, at the EXECUTIVE’s request, Quaker will provide confirmation that social security and disability premiums and other government charges have been paid to the appropriate governmental authorities.

MEDICAL EXAMINATION. The EXECUTIVE is entitled to a yearly medical examination.

HOME HELP ARRANGEMENT. In case of illness of the wife/life partner of an employee or in case of illness of a single employee with children, Quaker will contribute 50% of the costs of a professional who will take over the normal care of the family under certain conditions.

Holiday Allowance. The EXECUTIVE will be paid a holiday allowance of 8.5% of his gross annual base salary. The holiday allowance is paid out in April.

The basis number of holidays is 28. This number is increased, according to the age to be reached in the year concerned according to the following table:

Employees will receive a jubilee gift:

We will reimburse fees for scholarships for your children to the amount of 18,664 per year (year 2000). This amount will be indexed (based on the figures of the CBS) on a yearly basis and will be reimbursed for the period until the first child leaves senior school. After this period, 50% of the above-mentioned amount will be reimbursed per year until the other child leaves senior school.

ADDENDUM 2

Employment Agreement dated as of January 1, 2001

Mr. Mark A. Harris

DECLARATION OF SECRECY AND NON-COMPETITION

Secrecy

The EXECUTIVE acknowledges that information concerning the method and conduct of Quaker’s (and any affiliates’) business, including, without limitation, strategic and marketing plans, budgets, corporate practices and procedures, financial statements, customer and supplier information, formulae, formulation information, application technology, manufacturing information, and laboratory test methods and all of Quaker’s (and any affiliates’) manuals, documents, notes, letters, records, and computer programs are Quaker’s (and/or Quaker’s affiliates, as the case may be) trade secrets (“Trade Secrets”) and are the sole and exclusive property of Quaker (and/or Quaker’s affiliates, as the case may be). EXECUTIVE agrees that at no time during or following employment with Quaker will EXECUTIVE use, divulge, or pass on, directly or through any other individual or entity, any Trade Secrets. Upon termination of EXECUTIVE’s employment with Quaker, or at any other time upon Quaker’s request, EXECUTIVE agrees to forthwith surrender to Quaker any and all materials in his possession. Trade Secrets do not include information that is in the public domain at no fault of the EXECUTIVE.

Non-Competition

For a period of twelve (12) months after the termination of EXECUTIVE’s employment with Quaker, EXECUTIVE agrees, regardless of the reason for the termination of employment hereunder, that he will not:

The undersigned EXECUTIVE forfeits in favor of Quaker a penalty payable forthwith of Dfl. 100,000.— for each day of infringement of the above-mentioned prohibition, without prejudice to the right of Quaker to claim full damages instead. Quaker may at any time at its own initiative, or at the request of the undersigned EXECUTIVE, wholly or partly waive the stipulation referred to in this article. As long as the undersigned EXECUTIVE has not requested Quaker to waive the stipulation as referred to in this article, this stipulation shall be deemed between the parties not to harm the EXECUTIVE unreasonably, nor to impede him in a significant way to be employed otherwise than by Quaker.