How we know

The four week menu window is a matter of public record on McDonald's own seasonal menu. A NYX Awards 2021 entry, filed for client Mondelez, confirms the three creator campaign and its 1.7 million impressions.

Who says so	The NYX Awards entry is independent of the agency. The brief line, about HireInfluence partnering with OREO and McDonald's on the OREOShamROCKout campaign, is the agency's own. Read it
A second source	NYX Awards 2021 winner entry, filed by HireInfluence for client Mondelez International, independently confirms the 3-influencer campaign and the 1.7 million impressions, 298K engagements figures.
What the agency was asked to do	"HireInfluence partnered up with OREO and McDonald's to launch the #OREOShamROCKout influencer marketing campaign." (HireInfluence project page)
How that happened	Not published. HireInfluence lists McDonald's as a client alongside Microsoft, Target, Coca-Cola, Amazon, Walmart, NFL and Toyota, and its published project page covers a joint McDonald's x OREO #OREOShamROCKout campaign, but neither HireInfluence's site nor trade press describe how the relationship began (pitch, referral, or prior contact). No agency-of-record announcement was found for McDonald's specifically.
How long it took	No timing evidence found - no pitch length, appointment date, or contract length is published for this pairing.

Every other case where someone else set the date →

The other case where a brand hired HireInfluence →

← Every case

Every case here carries the one link that proves it, and names who said it. Where that is the agency describing its own win, the card says so rather than hiding it. Cases where nobody ever documented a reason are not on this page at all. Brought to you by Influencer Advisory, your influencer marketing partner for supplement, health and beverage brands.