Excerpt: [T]he Department believes that adoption of a '7-business day' safe harbor rule would present little, if any, additional risk to plan participants and beneficiaries. In this regard, the Department believes that most employers with small plans that are taking longer than 7 business days to deposit participant contributions will expedite the depositing of those contributions to take advantage of the safe harbor. The Department also believes that where participant contributions are being made by employers with small plans within a period shorter than 7 business days, few employers with small plans will incur the costs attendant to modifying their payroll system in order to hold such contributions for a few additional days.