The most common HR automation planning mistake is trying to automate everything at once. A 90-day focus on the six highest-impact automations produces verified ROI, builds team confidence in the tools, and creates the process documentation discipline that makes larger automation programs successful.

1. Offer Letter Generation and E-Signature Routing (Days 1-14)

Offer letter generation is the highest-ROI automation available to most HR teams. The process is repeatable and well-suited for Make.com: ATS offer approval triggers a scenario that pulls candidate data, role data, and compensation data into a pre-built offer letter template, generates a populated PDF, and routes it to DocuSign or PandaDoc for e-signature. Teams running this automation consistently cut offer letter processing from 45 minutes to under 1 minute. Implementation time: 5-7 days. Weekly time savings: 3-6 hours for teams sending 4+ offers per week.

2. Onboarding Document Collection (Days 8-21)

New hire onboarding requires collecting I-9 documentation (3-business-day window), signed offer letter, direct deposit information, benefits enrollment elections, and emergency contact information. Automating this collection sequence – triggered by offer acceptance, with deadline reminders and escalation to HR for overdue submissions – eliminates the 2-4 hours per new hire that HR spends chasing documents manually. At 10 new hires per month, that is 20-40 hours of freed HR capacity. Implementation time: 7-10 days.

3. PTO Approval Routing (Days 15-25)

PTO requests that require manager approval create a consistent administrative drag: employees submit, managers forget to respond, employees follow up, HR gets pulled in. Automating PTO routing – submission triggers a Slack or email notification to the manager with a one-click approve/deny link, 48-hour reminder if no response, auto-escalation to HR at 72 hours – eliminates the follow-up cycle and produces a compliance-ready approval log. Implementation time: 3-5 days. Weekly time savings: 1-3 hours for HR, with measurable improvement in employee satisfaction.

4. Interview Scheduling Automation (Days 20-35)

Manual interview scheduling – recruiter checks availability, emails candidate options, waits for response, books the calendar invite – consumes 20-40 minutes per candidate across a typical 5-interview process. Automation changes the sequence: qualified candidate screening completion triggers a scheduling link to the candidate showing real-time calendar availability. The candidate selects a slot; calendar invites are automatically generated and sent to all participants. Time-to-schedule compresses from 2-3 days to 2-4 hours. Implementation time: 5-8 days.

5. Offboarding Checklist Execution (Days 30-50)

Employee offboarding carries higher compliance risk than onboarding – system access revocation failures create security exposure, final paycheck errors create wage claim liability, and equipment return failures create asset loss. Automated offboarding triggers simultaneous workflows on termination record: IT receives an access revocation checklist with deadline, payroll receives a final paycheck calculation trigger, facilities receives an equipment return request, and benefits receives coverage termination notifications. Every step is logged with a completion timestamp. Implementation time: 8-12 days.

6. Compliance Report Generation (Days 45-75)

Regular compliance reporting – EEO-1 data compilation, OSHA log generation, benefits compliance reports, ACA reporting data – requires extracting data from multiple systems and assembling it into regulatory formats. Automating this extraction and assembly eliminates 4-12 hours of manual work per report cycle and removes the transcription errors that create filing corrections. The automation assembles the data and generates the draft report for HR review before submission – it does not file. Implementation time: 10-15 days depending on system connectivity.

Frequently Asked Questions

How do you prioritize which HR workflow automations to build first?

Prioritize by the intersection of frequency (how many times per week does this process run?), manual time per execution (how many minutes does each execution take?), and error risk (what is the compliance cost of a mistake?). The processes that score high on all three – offer letter generation, onboarding document collection, PTO approval routing – are the right starting points. Build a time-volume matrix: process name, weekly frequency, minutes per execution, and total weekly hours. The top three processes by total weekly hours are your first 90-day targets.

Can these automations work with any HRIS or ATS?

All six automations use API-based integration via Make.com and work with any HRIS or ATS that exposes REST API endpoints or webhook triggers. Greenhouse, Lever, iCIMS, Workday, BambooHR, Rippling, and ADP all support the integration patterns required. Platforms without API access require RPA-based workarounds or manual process handoffs – identify this constraint before scoping the automation project.

How do you build a business case for a 90-day HR automation program?

Start with a time-volume calculation: multiply weekly execution frequency by minutes per execution for each targeted process, sum the total weekly hours, and apply your organization’s cost model for HR staff time. HR teams consistently see payback periods in the 60-90 day range because these automations target high-frequency processes running multiple times per week. The strongest business cases lead with compliance risk reduction alongside time savings – the combination makes approval straightforward at most organizations.