Ayoub has served as a consultant to both OSHA and NIOSH.
NIOSH sought additional aid through a series of public town meetings held in Chicago, Seattle, and Boston.
With this purchase came the purveyorship of the Centers for Disease Control and Prevention-NIOSH Registry of Toxic Effects of Chemical Substances (RTECS, www.cdc.gov/niosh/rtecs), a database of basic toxicity information on household chemical substances, food additives, drugs, solvents, biocides, and chemical waste components which as of first quarter of 2012 contained ≈170,000 entries.