Utilize the input text as a context reference, choose the right relationship between Spillers and food from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

The Scottish-born Cairns has a back to basics, no-nonsense approach ingrained early in his working life where part of his first job with British pet food company Spillers involved examining dog excrement each Friday.

Answer: industry