SD Worx are international Payroll & HR experts with 70 years’ experience and over 65,000 customers in more than 90 countries. Customers that include some of the world’s leading brands. Innovation-led, SD Worx offers products and services that support the entire employee life cycle, including Payroll, HR, Workforce Management and Analytics. Today, we are the longest serving payroll provider in the UK and one of the largest in Europe.