Herbert Hoover actually said...
The Secretary of State is also authorized to grant to any officer or employee of the Foreign Service on account of personal illness or on account of exposure to a contagious disease which would render presence at a post of duty hazardous to the health of fellow employees, sick leave of absence with pay at the rate of 15 days a year, the unused portion of such sick leave to be cumulative not to exceed 120 days.
Context
Executive Order 5642—Administration of the Foreign Service
06/07/1931