status New rules for IR35 workers in the public sector start 6th April 2017 There are significant changes that commence on 6 April 2017 for workers in the public sector supplying their services via their own personal service companies or other intermediaries. New rules for IR35 workers in the public sector start 6th April 2017 There are significant changes that commence on 6 April 2017 for workers in the public sector supplying their services via their own personal service companies or other intermediaries.