Alternatively they can provide each worker with a copy of the approved leaflet, outlining British Health and Safety law, which has also been updated. The new poster dates from 2009. This version of the poster replaces the April 1999 version which has been updated after research showed that the old versions were visually unappealing and rarely read, according to HSE. The refreshed, updated poster has been redesigned to be reader friendly and more engaging to attract the staff to read the poster, as well as reflecting important changes in the law. Each copy of the 2009 poster also incorporates a unique, serially numbered hologram in the bottom right hand corner to prevent mis-selling. Although first introduced in 2009, HSE set a five year transition period for replacing the 1999 poster and a leaflet with the newer versions, with a deadline of 5th April 2014.