Mather & Company was a printer of motivational workplace posters, based out of Chicago, Illinois. Between 1923 and 1929, the company produced approximately 350 work-incentive posters. The posters were color lithographs containing vivid images accompanied by witty captions that demonstrated workplace interpersonal interactions, appropriate behaviors, ideals, and guidelines. Businesses would subscribe and receive a new poster every week. These posters hung on the walls of factories and offices across America.

The Mather & Company printing house was a family-owned and managed business by Harry Mather (1863-1929) and his son Charles Mather (1895-1972). Salesman Charles Rosenfeld (1886-1983) is credited with proposing the idea of the workplace posters to Charles Mather. Rosenfeld left the company in 1925 to create a new company, C.J. Howard Inc., that produced action posters and postcards of their own.

In 1923, the Seth Seiders Syndicate bought Mather & Company. Throughout the next several years, the Seth Seiders Syndicate purchased several other small publishing companies, including C.J. Howard Inc. The subsidiaries continued to publish under their own names and to be managed by their existing employees. Seiders chose Rosenfeld to help consolidate the companies.