The CEO explicitly says that this is a response to ADP:<p>&gt; As Conrad tells it, a select group of Zenefits employees holed up in the Courtyard Marriott to start working on a secret project to create a payroll system shortly after paycheck services giant ADP cut the company off earlier this year.<p>&gt; “We’ve been working on this basically since the day we started getting blocked by ADP,” Conrad told TechCrunch.<p><a href="http:&#x2F;&#x2F;techcrunch.com&#x2F;2015&#x2F;11&#x2F;16&#x2F;zenefits-launches-its-own-payroll-platform&#x2F;" rel="nofollow">http:&#x2F;&#x2F;techcrunch.com&#x2F;2015&#x2F;11&#x2F;16&#x2F;zenefits-launches-its-own-p...</a>