What Are the Functions of HR, and Which Should a Small Employer Build First?
November 6, 2026
HR is ten connected areas, not one job. What each area does, why they work as a system, and the order I would build them at 10, 25, 50 and 100 employees…
By McKinley Malbrough III, J.D., MS-HRM
Published November 1, 2026.

Cover photo: #WOCinTech Chat on Flickr, CC BY 2.0. About the photos
Short answer
A small employer makes seven talent decisions whether or not it has a process: hiring, pay, promotion, development, performance, succession and exit. Write one short decision rule for each that names the criteria, the person who decides, the evidence used and where the record is kept. A half-page rule applied consistently beats a policy manual nobody follows.
A small employer makes seven talent decisions whether or not it has a process: hiring, pay, promotion, development, performance, succession and exit. Write one short decision rule for each that names the criteria, the person who decides, the evidence used and where the record is kept. A half-page rule applied consistently beats a policy manual nobody follows.
I am Mac Malbrough. I hold a J.D. and an MS-HRM, I am not an attorney, and I help small employers put structure around people decisions. Where this article touches the law it is general information, not legal advice, and any figures in examples are hypotheticals I made up.
In a company of 12, the owner knows everyone, so decisions feel personal and quick. That speed is an advantage until two similar situations get two different outcomes. One employee gets a raise after asking twice. Another, equally strong, never asks and never gets one. A manager promotes the person who is easiest to work with, and a quieter high performer leaves. Nobody planned any of this. It happened because the decision had no written rule.
Inconsistency has two costs. The first is fairness: people notice, and they talk. The second is risk. If a decision is ever questioned, the strongest defense is a record showing that you applied the same criteria to everyone. You do not need an HR department for that. You need seven short rules.
Keep each rule to half a page with four parts:

The rule describes how you will decide, not what you will decide. It is a structure for judgment, not a replacement for it.
1. Hiring. Criteria come from the job, not the candidate pool: the skills and results the role needs. Use the same questions with every candidate and score them against the same scale. The structured interview scorecards are built for this. Record the scores and the reason for the choice.
2. Pay. Set a range for each job and place each person in it based on skills, experience and results, with the same factors for everyone in the role. Check the result for gaps between similar jobs. The Salary Band and Pay Range Builder Workbook and my pay equity check show how.
3. Promotion. Define what the next level requires before anyone asks. Post openings internally, state the criteria and tell the people who were not chosen what would make them ready next time. Keep a short note of why the decision went the way it did.
4. Development. Decide how the training budget and stretch assignments are allocated. A rule such as “each person has a development goal agreed in the annual review, and each goal gets one funded action” prevents the budget from going to whoever asks. The professional development plan kit gives the conversation a format.
5. Performance. State how expectations are set, how often feedback is given and what documentation is needed before a formal step. The performance review and PIP templates carry the forms. Regular one-on-ones keep the formal steps from being a surprise, and the One-on-One Meeting Templates for Managers give 12 agendas and a tracker.
6. Succession and retention. Identify the roles where one person’s departure would stop the work, and decide who covers each. The Succession Planner for Critical Roles scores the roles and tracks possible successors. Add a stay conversation each year with the people you most want to keep, using the Stay Interview Kit for Managers.
7. Exit. Decide in advance who approves a termination, what documentation must exist, who reviews it for consistency and what the final pay and paperwork steps are. In California, final pay timing is strict, so build the steps from my guidance on final paycheck waiting time penalties and termination documentation and severance. Talk with an employment attorney before a termination that carries risk.
One page per decision is enough: the date, the decision, the person who made it, the criteria used and the evidence. File it with the employee record or in a decision log that only the decision makers and HR can open. Keep the entries factual and free of comments about personal traits that are not relevant to the criteria. A record written for a possible reader other than yourself tends to be better.

The same habit helps when you adopt AI tools for screening or drafting. If a tool contributes to any of the seven decisions, record what it did and who reviewed it. I discuss the line in where AI helps HR and where a person must decide.
I am not giving legal advice, but several principles are worth keeping in mind.
For California specifics, the guidance in my California HR laws by headcount article shows which rules apply at which size.
Here is a hypothetical promotion rule for a company of 30, written in under half a page. Criteria: the next level requires sustained results at the current level for twelve months, one example of leading a project and one example of developing a colleague, listed in priority order. Owner: the department head decides, after consulting the owner and HR. Evidence: the last two reviews, a short written case from the manager and a list of project outcomes. Record: a one-page note in the employee file stating the decision and the reasons, kept for the life of the employment record. Anyone who asks about a promotion can be shown the rule, which turns a personal question into a shared standard.
Notice what the rule does not do. It does not promise a promotion at twelve months, and it does not remove the manager’s judgment. It makes the judgment visible and repeatable. If the owner overrides the rule, the rule asks that the override be recorded with the reason, which discourages casual exceptions and gives you a way to spot patterns.
The decisions form a chain. Hiring criteria set the people you bring in. Pay rules place them. Performance rules tell them how they are doing. Development and promotion rules decide where they go next. Succession rules cover what happens if they leave, and exit rules govern how the relationship ends. When one rule is missing, the pressure shows up in the next. A company with no pay rule, for example, gets promotion requests that are really pay requests. A company with no performance rule gets exits that arrive with no record. Writing all seven, even briefly, reveals the dependencies and tells you which rule to write first.
Review the set once a year, on the same date, and after any incident that exposed a gap. Keep the revision date at the top of each page so people know which version applies, and archive the old ones.
Pick the decision that causes you the most second-guessing, and write its half-page rule today. If you do not know which, start with pay or exit, because those are the ones that tend to generate disputes. Run the next real decision through the rule and note what the rule failed to cover. Then adjust it.
The performance review and PIP templates are a good first tool for the performance and exit rules. If you would like help drafting all seven rules around your own business, book a free consult through my HR services for small businesses.
Related reading: which HR functions a small employer should build first.
McKinley holds a J.D. but is not a licensed attorney. Articles here are general information, not legal advice. For your specific situation, talk with an employment attorney.
Data current as of November 2026. Sources are linked where each figure appears.
Share this article
This article is general information, not legal advice. Laws change and every situation is different; for advice on yours, talk with an employment attorney.
Related questions
November 6, 2026
HR is ten connected areas, not one job. What each area does, why they work as a system, and the order I would build them at 10, 25, 50 and 100 employees…
September 19, 2026
How to fire an employee in California without inviting a wrongful termination claim: what employers need on termination day, and what employees should check before signing a severance agreement.
October 20, 2026
A performance improvement plan can be a real second chance or exit paperwork. How to tell which, what to do in the first 48 hours, when to negotiate an exit, and how…