TWC, in collaboration with the national Workforce Information Council, conducted a survey of employers in 2015. Employers were asked to estimate cost and availability of data, and results were broken down by firm size. The survey showed significant concern among employers about mandating submission of additional occupational data via unemployment insurance tax returns. Those concerns covered numerous topics. However, implementation costs and compliance-burden issues were most often mentioned. TWC estimates that the initial cost to employers could range from $478 million to $1.2 billion, with annual recurring costs of $342 million to $715 million.