This study examined changes in retail foodservice employees’ food safety behaviors after food safety messaging poster implementation in eight foodservice sites serving older adults. Microbial, observational, and interview data were collected at each site on three occasions: pre‐, short term post‐, and long term‐post poster intervention. Based on observational data, no significant changes in compliance rates were found upon short term post‐intervention. Increased compliance was observed in two facilities and decreased compliance in two other facilities at long term post‐intervention. Factors that appeared to impact intervention included: involvement of employees in poster implementation, food safety training, and poster rotation.