William E. Hammel

William "Billy" Hammel is a partner in the Dallas office of Constangy. Billy's practice includes counseling and representing employers in the areas of employment law, labor relations, compensation and benefits, workplace safety, corporate governance, officer and director liability, preventative counseling,  liability and risk management, and best practices. He regularly represents employers in a wide variety of labor and employment law matters before administrative agencies and in state and federal courts.

Billy's practice also includes drafting and litigating employment agreements and restrictive covenants, trade secret agreements, independent contractor agreements, vendor agreements, and corporate agreements.

Billy's primary focus is on helping clients avoid litigation in the first place through preventative counseling, compliance counseling and training, internal audits, investigations, and damage control.


Regularly speaks and conducts training for clients in a wide variety of matters, including EEO and compliance training, risk mitigation, corporate governance, and best practices.

Texas Employment Law Letter, contributor (since 2011)

  • Recent Articles:   
    • “Proving Up Electronic Signatures”
    • “Responding to a Data Security Breach:  Are You Prepared?”
    • "Limiting Risk When Employees Announce Their Resignation”
    • “Is Password Sharing a Federal Crime”
    • “EEO-1 Reports Will Soon Require Employee Pay Information”
    • “Commissions Roundup 2017:  Time to Update Your Commissions Plans”

Constangy, Brooks, Smith & Prophete, LLP Client Bulletins, contributor (since 2016)

  • Recent Articles:  
    • “The Defend Trade Secrets Act of 2016:  A New Federal Claim for Misappropriation”
    • “External Storage Mediums are Tangible Objects:  New York Appellate Court Reinstates Conviction of Former Goldman Sachs Programmer Sergey Aleynikov”

“DOL’s Final Rule Regarding Salary Levels for Exempt Employees”

  • Constangy, Brooks, Smith & Prophete, LLP Lunch and Learn – Dallas (August 2016)
  • Constangy, Brooks, Smith & Prophete, LLP Lunch and Learn – Austin (November 2016)

BLR Master Class:  Family and Medical Leave Act

  • BLR, San Antonio (October 2016)

"The Local TRO Process" and "Fight at the TI Corral"

  • UT Law CLE:  2016 Non-Compete Boot Camp (September 2016)

“Considerations in Enforcing Non-Competes or: How I Learned to Stop Worrying and Love Non-Compete Litigation”

  • IGNITE SBOT, State Bar of Texas Annual Meeting (June 2016)

“The Defend Trade Secrets Act of 2016:  What Practitioners and Companies Need to Know”

  • ABA TIPS Corporate Counsel Committee CLE (May 2016)

“Key Points to Consider Regarding Non-Compete Covenants in Your Practice”

  • Dallas Medical Journal (March 2016)

“Representing the Company” and “Getting It Resolved”

  • UT Law CLE Non-Compete Camp:  Drafting, Litigating and Trying Non-Competes (Sept. 2015)

“Advanced Deposition Techniques: Leveraging Exhaustion, Boxing-In, and Summarization Approaches with Adverse Witnesses”

  • Strafford Publications CLE (March 2013-2015)

“Employee-Side Attorneys and How to Avoid Them” (Panel Discussion)

  • 27th Annual South Texas College of Law Employment Law Conference (July 2014)

“Drafting and Litigating Employment Agreements and Restrictive Covenants”

  • Constangy, Brooks & Smith Yearly HR Certification and CLE Course (June 2014)

“Hot Topics in Employment Law”

  • Airports Council International, 2014 Legal Affairs Spring Conference (April 2014)

“Witness Impeachment Strategies & Proven Techniques for 2014”

  • National Constitution Center Publications CLE (January 2014)

“Managing Employee Leave and Navigating the Devil’s Triangle”

  • HR Hero CLE (January 2013)

Awards & Recognition

  • Named a Texas Super Lawyer, 2012-2016

Professional Activities/Associations

  • Dallas Bar Association – CLE Committee
  • Employers Counsel Network

Civic/Charitable Activities/Associations

  • Board Member, Exodus Ministries
  • Fundraising and Community Service for local non-profits
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