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Westlake Chemical Overview

Houston, TX
5001 to 10000 employees
Company - Public (WLK)
Chemical Manufacturing
$5 to $10 billion (USD) per year
Westlake Chemical (NYSE: WLK) is a quality manufacturer and dependable global supplier of petrochemicals, plastics and building products, which in turn make life better for people every day.

Employing approximately 9,400 people, Westlake operates from ... Read more

Mission: Our mission is to serve our clients by enhancing daily life through the products and services we provide, which in turn make life better for people every day.

Company Updates

  • Westlake Chemical is proud to have placed at #352 on the Fortune 500 list. This is the second year in a row that Westlake has ranked on the list.
    For more information, click here:

  • Vinnolit, a Westlake company, recently joined the EU Circular Flooring Project. The project aims to advance sustainability by enabling the recycling of PVC floor coverings. To learn more about the project and its innovative recycling process, click here:

    Circular Flooring

    "Within the EU project Circular Flooring, Vinnolit is responsible for the detailed testing and evaluation of the PVC recyclates, generated by the CreaSolv® process. In this role, Vinnolit will investigate the potential of the recyclates in its modern PVC application center in Burghausen with a view to future applications," says company spokesman Dr. Oliver Mieden.

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Westlake Chemical – Why Work For Us?


Every day, Westlake products are seen, used and depended on throughout the world. We produce approximately 40 billion pounds of petrochemicals annually. Over the past three decades we have built a reputation for being a dependable, safe, world-class producer and supplier.

We hire competent, flexible people who work across a broad range of disciplines. From well-trained plant operators, to resourceful engineers, to multi-faceted professional staff, everyone has a chance to make a significant, visible contribution.

As a solid company, Westlake has the resources to be smart about its growth and talent. We invite you to enhance your work life and career experience by applying your talent here.


For college students who would like to take a closer look at career opportunities within the petrochemicals industry, Westlake Chemical sponsors internship programs within a variety of departments such as: Engineering, Operations, Chemistry, Procurement, Supply Chain, Information Technology, Information Systems, Accounting and Human Resources.  

Participants will have opportunities to interact with senior managers, current program members and program alumni.  The hands-on experience is both challenging and rewarding, and provides the potential for valuable reinforcement to support career aspirations.  

Find out when Westlake will be on your campus through your campus career center. Meet with Westlake professionals in your discipline to learn more about our opportunities! 

Westlake Chemical Reviews

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Westlake Chemical President and CEO Albert Chao
Albert Chao
42 Ratings
  • Featured Review

    Helpful (1)

    "Awesome Company with great benefits!"

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Current Employee - Anonymous Employee
    Current Employee - Anonymous Employee
    Positive Outlook
    Approves of CEO

    I have been working at Westlake Chemical full-time (More than 3 years)


    Has won many awards, hit the fortune 500 for the first time, broke record sales last year and more! Plus: Great benefits, quarterly bonuses + annual bonus + 9/80's in certain departments!


    No Cons to speak of!

See All 71 Reviews

Westlake Chemical Photos

Westlake Chemical photo of: 2018 Houston Top Workplace
Westlake Chemical photo of: NAPCO
Westlake Chemical photo of: Training Event
Westlake Chemical photo of: Business Simulation Training
Westlake Chemical photo of: Business Simulation Training
Westlake Chemical photo of: NAPCO
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Westlake Chemical Interviews



Getting an Interview

Getting an Interview




  1. Featured Interview

    Helpful (1)  

    Process Controls Engineer Interview

    Anonymous Employee in Lake Charles, LA
    Accepted Offer
    Positive Experience
    Easy Interview


    I applied online. The process took 3+ months. I interviewed at Westlake Chemical (Lake Charles, LA).


    The interview was more standard personality question based with very little on the actual duties even when I proceeded to ask. The overall atmosphere was very pleasant and cozy as one would expect in Louisiana.

    Interview Questions

    • What concentrated of Electrical Engineering was I focused in   2 Answers
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Westlake Chemical Awards & Accolades

  • Fortune 500 (#352), Fortune 500, 2018
  • 2018 Houston Chronicle Top 100 (#1), Houston Chronicle, 2018
  • Top 25 Companies for Diversity in Texas, National Diversity Council, 2018
  • Forbes America’s Top Public Companies (#401), Forbes, 2017
  • Houston Chronicle Top 100 (#31), The Houston Chronicle, 2017
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Pledges & Certifications

Diversity Commitment

Has programs that support a diverse and inclusive workforce

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