Thank you, Christian and thank you, everyone for joining our call. This morning we reported our second quarter fiscal 2019 results with revenue of $3.5, billion up 8% on both reported and organic constant currency basis. We are pleased with this revenue growth which was slightly above our expectations and which was aided in part by the continued strength of our employer services down market and multinational solutions and our PEO. Our adjusted diluted earnings per share grew 30% to a $1.34 and benefited from our strong revenue growth, as well as adjusted EBIT margin expansion, lower adjusted effective tax rate and fewer shares outstanding. Our results this quarter continue to highlight the underlying strength of our business model, as we continue to experience the benefits of operating efficiencies enabled by our ongoing transformation efforts. We also continue to see improvements in our cost base across our businesses and back office functions. We remain excited with the progress of our investments in technology, including our next-gen solutions and we are also pleased with the performance of our recent acquisitions. As we continue our efforts to accelerate our investments to enhance the efficiency and effectiveness of our products and services, we also continue to see improvements in our overall client satisfaction scores. With these positive trends across our businesses, we are reaffirming our expectation of 25 to 50 basis points of improvement in ES revenue retention for fiscal 2019. Moving on to employer services new business bookings, this quarter we saw bookings growth below our expectations with 1% growth for the quarter, that can happen some years the timing of the December holidays and our own selling calendar played a larger than anticipated role which resulted in a number of deals particularly within the mid and upmarket pushing into the third fiscal quarter. While, we see a similar pattern from time to time the impact this year was a bit more pronounced than typical. And it's also important to remember that new business bookings has inherent variability quarter-to-quarter. With that said, we continue to see strong bookings performance in our downmarket, multinational and HRO businesses. And our largely pleased with our product positioning win rates and overall sales strategy. For these reasons, despite the lower than expected growth this quarter, we are maintaining our forecast of 6% to 8% ES New Business Bookings growth for fiscal 2019. Now, I would like to expand on my earlier comments regarding the progress of our transformation initiatives and then touch on some strategic and operational business highlights. First, looking internally, as we discussed at our June 2018 Investor Day, we have launched a number of initiatives across the organization with the objective of enhancing both our operating efficiency and our go to market strategy. As you can see from this quarter's results, our efforts to streamline our operations, while also enhancing the client experience are paying off. We are clearly seeing the benefits of these transformation efforts help our overall margin performance. In addition, we feel good about the progress we are making, as we transform our service and we continue to see broad based positive trends in our client satisfaction scores, which for some of our businesses are now at record high levels. I am pleased with what we have achieved to date and with our ability to remain on track as we tackle various competing demands. I'm especially proud of our associates are helping us manage through these change initiatives in a thoughtful and careful way. Now, moving on to an area of key strategic differentiation, our leading data analytics and benchmarking solution, ADP DataCloud. As a world of work evolves and companies and their employees increasingly demand greater access to timely and insightful data, we believe that ADP is well-positioned to leverage our broad based HCM dataset to further empower our clients' front-line managers and key decision makers. With these capabilities in mind, we recently expanded the use of ADP DataCloud to deepen our relationship with key distribution channel partners. One example of this is through our current CPA centric data product, Accountant Connect which gives CPA the ability to see their clients' payroll reports, tax forms and notifications, while also providing them with a central practice management tools, all in one place. We are always looking for new ways to leverage the strength of our data and the breadth of our HCM services to generate additional opportunities for growth. And at the beginning of November, we announced an exciting new partnership with Intuit, which now further strengthens the services we offer to accounts. Through this initiative, we have expanded our integration with QuickBooks adding an enhanced general ledger interface that maps directly through Accountant Connect. This new cloud based interface combines the financial and transactional capabilities of QuickBooks with a deep data pool available through ADPs DataCloud and will help accountant save time while also providing access to award winning compensation insights to help improve their client's business, as we head into tax season. We are proud to be able to provide product and insights like these to our clients to further empower them. Last week, we were equally proud to be selected as one of Fortune magazine's world's most admired companies for the 13th consecutive year. I am pleased that our efforts have been consistently recognized especially, as we make steady progress on our transformation amid dynamic business environment. It is an honor to once again be among the most admired companies in the world and this is a testament to the commitment of our associates, clients and partners to drive innovation, as we work together to change the world of work. Overall, we are pleased with our progress and remained confident in our long term strategy as we continue our efforts to deliver on our transformation initiatives. And with that, I'll turn the call over to Jan, for his commentary on the second quarter results and fiscal 2019 outlook.