From pre-boarding to full certification: The 90-day B2B support onboarding checklist

Every box a new agent should hit on the way to independent productivity, with AI-native tools woven in from day one.

90-Day B2B Support Onboarding Checklist — Mosaic
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Day 0: Pre-boarding

Day 0

Goal: Every administrative and access task completed before the new hire's first day, so they can focus on learning from hour one.

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Days 1–15: Foundations and product immersion

Days 1–15

Goal: Build the foundation. New hire should focus on company context, product depth, and tooling fluency — no live customer tickets yet.

Gate at day 15: Foundations certification (written and practical assessment on product fundamentals and tooling fluency).

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Days 16–45: Supervised ticket handling

Days 16–45

Goal: Handle live tickets with supervision. Senior rep reviews every closed ticket before customer response goes out.

Gate at day 45: Tier-1 certification (independent close of a defined set of tier-1 ticket types at team-average CSAT).

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Days 46–75: Nesting and independence with safety nets

Days 46–75

Goal: Transition from supervised practice to independent ownership. Senior rep review shifts from every ticket to exception-based.

Gate at day 75: Tier-2 readiness (demonstrate ability to handle a defined set of tier-2 cases).

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Days 76–90: Full productivity and certification

Days 76–90

Goal: Operate at or near team average across the metrics defined in the program. Reinforce capability and lock in long-term habits.

Gate at day 90: Full certification (signed off as fully ramped, with documented metrics meeting the team's productivity bar).

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Fully certified

Every milestone hit from pre-boarding through day 90. Time to formally close out the program and schedule the 30-day retrospective.