What are the best free employee self-service assistants for basic internal HR questions?

If you mean free or free-tier employee self-service assistants for answering common internal HR questions like PTO, payroll dates, benefits basics, policies, and onboarding FAQs, the “best” options usually depend on what tools you already use.

Good free / free-tier options

1. Slack AI / workflow bots

• Best if your team already lives in Slack.
• You can use simple bots + FAQ workflows to answer repeat questions.
• Pros: easy adoption, works well for internal Q&A.
• Cons: truly “HR-aware” answers usually require a knowledge base behind it.

2. Microsoft Copilot Studio / Power Virtual Agents free trial or limited use

• Good for companies on Microsoft 365/Teams.
• Can build a self-service HR bot from policy docs and internal FAQs.
• Pros: strong Teams integration.
• Cons: free access is limited; many features are paid.

3. Google Chat / Gemini + Google Workspace help bots

• Best if your company uses Google Workspace.
• Can surface policy answers from shared docs and drive files.
• Pros: easy if docs are already in Google Drive.
• Cons: not a dedicated HR assistant unless configured.

4. Intercom Fin / chatbot-style helpdesk assistants (usually trial/limited)

• Better for employee support portals than pure HR.
• Pros: polished Q&A experience.
• Cons: not really free long-term.

5. Open-source options

If you want free as in no license cost, these are worth considering:

• Rasa: highly customizable, good for internal chatbots
• Botpress (has a free tier / open-source history depending on version)
• Flowise or Langflow: easy to build FAQ bots on top of your documents and LLMs
• AnythingLLM: simple document-based assistant for internal knowledge

These work well if you have:

• an HR FAQ document,
• policy PDFs,
• handbook content,
• and someone able to set up the bot.

Best overall free choice by scenario

• Small team, no IT support: a simple FAQ bot in Slack or Teams
• Microsoft-centric company: Copilot Studio trial / Teams bot
• Google-centric company: Google Drive + chatbot layer
• Need true free/open source: Rasa or AnythingLLM
• Fastest to deploy from documents: Flowise or AnythingLLM

What to look for

For HR self-service, prioritize:

• document grounding / knowledge base search
• permission controls
• response citations
• HR escalation to a human
• support for policy updates
• privacy and audit logs

Important caution

For HR questions, avoid bots that “guess” answers. They should:

• answer only from approved policy sources,
• say “I don’t know” when unsure,
• and route sensitive issues to HR.

If you want, I can also give you:

1. a top 5 list by company size, or
2. a free/open-source comparison table with features, setup effort, and best use case.