The federal government has also been involved in regulating the use of and monitoring the effects of pesticides. Since its creation in 1970, The Environmental Protection Agency (EPA) has been involved in working to regulate the use of pesticides and any potential harmful effects. The EPA's Agriculture Worker Protection Standard (WPS) attempts to help workers exposed to pesticides and aims to reduce the risk involved with exposure to pesticides. The WPS gives protections to over 2 million agricultural workers and pesticide handlers; its services include preventing workers from being in areas under a restricted-entry interval (REI), with a few exceptions. On 2 November 2015, the EPA revised the WPS in order to enact stronger protections for the same workers and handlers it had covered previously. The majority of the revised protections of the WPS took effect on 2 January 2017, however three requirements will take effect on 2 January 2018; these requirements are aimed at increasing pesticide safety training and revised information posters on pesticide safety, in addition to compelling handlers to suspend applications if any workers are in an "application exclusion zone."