Every company that hires people needs someone to look after them. This is the job of human resources (HR). The HR team handles how a company hires, trains, pays, supports, and retains its people
Human resources roles and responsibilities have evolved from simple administrative paperwork into a strategic function. It has been working on workforce planning, data analytics, and supporting diverse, remote, and tech-driven teams.
This guide walks through the whole picture: what HR is, what it does, the tools it uses, and the challenges it faces today.
What Human Resources Actually Is
The role of HR varies from one organization to another depending on their needs, from hiring, payroll, and person handling complaints. Each is partly correct, as it meets whatever needs they have, however, the full picture of responsibilities is broad and covered below.
A Working Definition of HR
HR is a team, or a single person, managing hiring, payroll, training, and other activities supporting employees.
A small company with a limited budget hires one generalist to manage all these things. Large organizations, on the other hand, have an HR department with dedicated personnel for each job, such as recruitment, payroll, and training. Whether it is a single person or a dedicated team, the core job remains the same: hiring the right people, supporting them, and upholding laws.
How the HR Function Has Evolved
For most of the twentieth century, the role of HR was limited to paperwork, payroll, and records. Today, it has evolved to manage workforce planning, payroll management, and other strategies to make employees productive. The demand on HR leaders has surged with it.
Deloitte found the number of distinct skills required of a chief human resources officer rose 23% between 2018 and 2024, the largest jump of any C-suite role it studied. The job now is to understand the business and help steer it, not just keep records.
The Core Functions of HR
Most of the work HR does falls into 7 areas, covering everything from the first day of an employee to the final day. These are the core functions of HR, and each has its own responsibilities. At a small company, a single human resources manager is working across seven, and enterprises have a dedicated one for each area.
Recruitment and Hiring
This stage includes finding candidates, screening, interviewing, sending an offer, and onboarding the right person.
At enterprises, sourcing teams find candidates, and recruiters interview & close them, working in the same applicant tracking system. Hiring managers have a vetted list of candidates to interview and select from.
Onboarding and Orientation
Onboarding is the process between an offer being accepted and actually contributing. HR handles this process from paperwork, system access, introductions, to the first day of training.
This is an important process, as onboarding decides how long an employee takes to become fully productive.
Training and Development
Hiring is just a part of HR’s job. Training and development are the key activities HR handles to ensure people keep growing by providing formal courses, career paths, and day-to-day support, enabling them to excel in their role.
Employee Relations
Communication between employees is often key to productive work, and when it stops happening, HR has to step in. HR handles conflict resolution, grievances, workplace investigations, and adherence to the company's culture
Compensation and Benefits
Payroll is also part of the HR team. Working with the company's budget, the HR team decides what people can earn and the bonuses they can get for the work. The work spans across pay structure, market benchmarking, health and retirement benefits, and leave.
Beyond payroll, HR also looks after the PTO policy, and a fair approach to a leave of absence weighs on whether people stay as much as the salary number does. The package works when it survives a competitor's offer, and when HR can defend every figure in it.
Performance Management
Performance management sets expectations and checks whether the employee is meeting them through goals, reviews, regular feedback, and performance improvement plans.
HR works with managers for continuous evaluation of employees' performance, and steps in when they are not performing to expected results.
Compliance and Risk Management
Compliance and risk management also fall under HR’s responsibility. From employment law, worker classification, wage-and-hour rules, workplace safety, to data privacy, HR ensures the organization follows all the requirements.
The Role of HR Managers
An HR manager executes day-to-day operations. The role and responsibilities of an HR manager include different things at different levels.
An HR generalist handles everything related to execution, like hiring, payroll questions, and employee issues. An HR business partner, or HRBP, works closely with one team or department and supports its leaders on people decisions. An HR director or CHRO owns the end-to-end strategy for the whole company and manages the executive team. HR manager duties grow as you move up that ladder.
A manager's work involves a mix of skills for the hard conversations, data literacy to read workforce numbers, and legal knowledge to identify risks before it becomes a claim. The three areas below are where those skills get used most.
Strategic Planning
This is the forward-looking part of the role. HR managers plan how many people a company needs, their roles, and by when to ensure continuous operations without disruptions.
In simple terms, forecasting headcount involves collaborating with department heads and utilizing HR analytics to identify patterns early. This includes recognizing which teams are at risk of losing staff or identifying where hiring is not keeping pace with demand. This helps the company to hire ahead of the need, instead of scrambling after a resignation comes in.
Policy Development
Every company follows written rules, and HR is the one writing most of them. Policy development includes drafting new policies, updating old ones, and making sure employees follow them.
HR also ensures that these policies are shared with employees and helps them with all their questions, so they feel informed while following them.
Employee Advocacy
HR is the bridge between employees and leadership. When employees have any concerns, they reach out to HR, and HR has to take them to leadership. Also, HR’s role is to explain the leadership’s decision back to employees in a positive way.
These skills matter more during layoffs or unexpected deductions from salary, employees reach out to HR for clarification. So, if HR handles it poorly, the employee experience gets ruined, and if handled well, HR becomes the first place for problems to get solved.
When layoffs, pay changes, or an unpopular policy arrive, employees watch how HR handles it. Handle it poorly, and people stop bringing HR anything real. Handle it fairly, and HR becomes the place problems get solved.
Modern HR challenges
Distributed teams, AI tools, and new laws have all changed how HR teams work, introducing new challenges for them. The following 6 are the most common HR challenges:
Managing Remote and Hybrid Teams
Onboarding is getting harder when teams are working across different cities and time zones, so doesculture-building and performance management.
HR teams have to evolve themselves, adapting remote-first policies and treating office and work-from-home employees the same way.
Integrating AI Into HR Workflows Responsibly
AI took the first seat in HR operations, from resume screening and automatically answering routine HR questions to scanning employee sentiments. AI is always being associated with biases, and adapting it into HR also brings such issues.
HR teams, beyond handling employee-related issues, now also have to audit these AI tools to avoid scope for bias. Regulators are moving as well, with rules like New York City's Local Law 144, the EU AI Act, and Colorado's AI Act now limiting automated hiring.
Multi-Generational Workforces
This might be the first time when four generations are sharing a workplace side by side, from Gen X and Millennials to Gen Z generation who have different expectations from their job. Gen Z, for example, expects faster promotions and quick Slack replies, while Gen X prefers stability.
HR teams have to maintain a culture and workspace that meets the needs of all four generations, and policies that protect their interests.
Employee Retention In a Candidate-Driven Market
Talented employees have more options than before, and losing one is expensive. Gallup puts the cost of replacing an employee at one-half to two times their annual salary, once lost output and rehiring are counted.
HR, along with great hiring, also has to work on retaining existing employees. To hold on to staff, HR teams map out career paths so people can see a future in place. They also open new roles to internal candidates before hiring outside, and run stay interviews to catch problems before someone quits.
Expanding Compliance Complexity
Compliance is getting more complicated and multiplying across states. A company hiring from five states has to comply with different regulations, and for remote employees across countries, these rules become more rigid.
HR teams keep up by tracking requirements state by state and building compliance calendars that flag deadlines early. For the harder questions, many bring in outside employment lawyers.
Employee Wellbeing and Burnout
Burnout has become a common reason people quit, which pushes mental health higher up the HR agenda. Long hours and constant messaging wear people down before a manager notices. HR teams are acting earlier. Many offer Employee Assistance Programs (EAPs) for confidential support and add mental health days to their leave policies. Some also watch team workloads so one person does not end up carrying the group.
HR Technology and Tools
HR teams use several software tools to execute their day-to-day tasks, and most of these tools have grown over time. A mid-size company often uses 7 or more tools, with each one handling a specific job.
HR Information Systems (HRIS)
HRIS is a primary system for storing employee data like name, job title, pay scale, and employment history. It stores all this information in a single place by connecting with other HR tools.
Some of the most popular HRIS tools are BambooHR, Rippling, and Workday. Before these tools, all the employee information was scattered across different spreadsheets.
. Before these systems were available, employee data was managed through spreadsheets and emails, which could become outdated over time.
Applicant Tracking Systems (ATS)
ATS is an integral part of the recruitment process. It collects all job applications in one place and helps recruiters with the evaluation of each candidate's resume.
The system is helpful in maintaining an organized hiring process, as it removes the need to manage candidates through spreadsheets or long email threads.
Learning Management Systems (LMS)
Learning Management System is helpful for managing employee training and development. It hosts training courses, records course completions, and stores certifications in one place
LinkedIn Learning, Docebo, and Workday are some of the most commonly used LMS platforms.
Performance Management Platforms
Performance Management Platforms help HR teams to handle employee performance activities such as goals, review cycles, and one-to-one meetings. This tool keeps all the information in one place, supporting performance reviews.
Payroll and Benefits Administration
Payroll and benefits administration tools are responsible for processing employee salaries correctly and on time, along with managing payroll tax filings.
These tools also help with benefits enrollment for employees. Some of the most popular tools in this category are Gusto, ADP, and Rippling.
There is some overlap between payroll tools and an HRIS, and a few platforms provide both. Payroll software, however, offers more detailed support for tax filing and the related compliance requirements.
Employee Engagement and Pulse Survey Tools
Employee engagement and pulse survey tools are used to understand how employees feel about their work over a period of time. Instead of running a single annual survey, these tools send short and regular surveys to track changes in employee sentiment. Culture Amp, Officevibe, and Peakon are examples in this category. They help HR teams notice early signs of low morale, so that issues can be addressed before employees decide to leave the organization.
HR Ticketing and Case Management
HR ticketing and case management is one of the newer categories in the HR tech stack, and it is based on the ticketing model used in IT support. In this approach, employee requests are turned into trackable tickets instead of being handled through direct messages or emails.
Most employee requests are routine in nature, related to PTO, benefits forms, and company policies. When these messages are handled through direct messages or email, keeping a record is hard. A request can get delayed if the concerned person is unavailable, and it also becomes difficult to measure response times or identify repetitive queries. A ticketing system addresses these gaps by providing visibility into every request, maintaining an audit trail for sensitive cases, and assigning a service-level target, or SLA, for response time.
This category also works alongside the other tools in the stack. Some HR teams use a Slack-native ticketing layer together with an HRIS like BambooHR, which allows employees to get their answers within the tool they already use, while record updates are reflected back in the HRIS. This also removes the need for employees to log in to a separate portal to update their information. Our HR ticketing system page and the BambooHR integration explain how the two work together.
What HR Looks Like at Different Company Sizes
The role of HR is not the same in every company. It changes as the company grows in size. A small startup manages HR very differently from a large enterprise. The four stages below show how HR works at different company sizes.
- Startup (under 25 employees): In a startup, there is usually no dedicated HR person. The founder or an operations lead takes care of HR work along with their own role. Most of these companies use a PEO for basic HR support. The main focus here is hiring and staying compliant with the basic rules. A PEO like Justworks or Rippling is commonly used at this stage.
- Growing SMB (25 to 150 employees): This is the stage where a company makes its first in-house HR hire, who is usually a generalist. As per SHRM, the HR staffing ratio is around 1.5 to 4.5 staff for every 100 employees, so this first hire generally happens somewhere between a few dozen and 100 employees. The focus at this stage is on building HR processes and working on company culture. The tools used here include an HRIS, an ATS, and a basic HR ticketing system.
- Mid-market (150 to 1,000 employees): The HR team at this stage grows to around 3 to 8 members, and the first HR business partner roles start coming in. The focus now shifts to talent development and setting up formal performance systems. Companies here make use of a full HR tech stack.
- Enterprise (1,000+ employees): In an enterprise, HR is led by a CHRO. HR business partners are spread across different teams, and there are specialists for areas like compensation, learning and development, and DEI. The focus at this level is on strategic workforce planning. These companies use an enterprise HRIS along with an integrated platform layer.
Internal vs. External HR Management
There are two main ways a company can handle HR. One way is to build an internal team of its own, and the other is to outsource the HR work to an outside provider. Some companies also go for a mix of both. What works best depends on the size of the company and the budget it has for HR.
In-House HR Teams
An in-house HR team means the HR staff are direct employees of the company. These employees take care of all the HR functions, like hiring, payroll, employee relations, and compliance. Since they work inside the company, they have a good understanding of the culture and are available to employees whenever needed. The only concern with an in-house team is the cost, as the company has to pay for salaries and HR software.
Companies usually go for an in-house team once they reach a size where hiring an HR person becomes necessary. As per the SHRM staffing ratio mentioned earlier, this point mostly falls somewhere between a few dozen and 100 employees.
Outsourcing HR (PEOs and HRO)
In this option, a company hands over its HR work to an external provider. A PEO (Professional Employer Organization) handles tasks like payroll, benefits, and compliance for the company. HRO, which stands for HR Outsourcing, is a similar option, but here only some of the HR functions are given to an outside firm. This option is mostly used by small companies that do not have the budget or the requirement for a full HR team. It allows them to get HR support without having to hire someone on a full-time basis.
Hybrid HR Models
A hybrid model is a combination of both in-house and outsourced HR. Here, the company keeps a part of the HR work with its own team and gives the rest to an outside provider. For example, a company can keep an in-house generalist for the day-to-day employee needs and use a PEO for payroll and compliance. This model is suitable for companies that are in a growing phase and are not fully ready for a complete in-house team yet.
Supporting Employee Wellbeing
Employee wellbeing is now an important focus area for HR teams. A supported employee is more likely to stay with the company and do productive work. For this reason, companies have started to invest in different wellbeing programs for their employees.
Wellness programs are a common part of this. These programs are mostly focused on the physical health of employees by including things like fitness benefits, health check-ups, and gym memberships.
Mental health support is another area where companies are focusing. Employees are given access to counseling and support through Employee Assistance Programs (EAPs). Some companies also provide mental health days. These days allow employees to take a break when they feel stressed or burned out.
Flexible work is also used to support employee well-being. Options like remote work, hybrid schedules, and flexible working hours are offered to employees. This helps them manage their work and personal life. It also reduces stress and gives them more control over their day.
HR's Role in Building Company Culture
A company’s culture is a big part of how a company works. It gets built over time by continuously providing values, behaviors, and how employees are treated. HR has a direct role in shaping this culture.
Diversity, Equity, and Inclusion
Diversity, equity, and inclusion are an integral part of a company's culture. HR has a responsibility to build a diverse workforce in which all employees are treated equally. The best practice to do so is by ensuring fair hiring, equal pay, and a workplace where every employee feels included.
Employee Engagement
Employee engagement is about how a person feels connected and involved with their work. From regular feedback and team activities to open communication with employees, these are some of the activities to keep employees productive.
Recognition and Rewards
Recognition and rewards are used to value the work done by employees. When an employee gets recognized for their work, they feel motivated and valued. HR sets up different employee recognition programs for this purpose. These can be in the form of awards, bonuses, or simple appreciation messages. Such programs help in building a positive work culture where good work gets noticed.
Frequently Asked Questions
What is the primary role of HR in an organization?
The primary role of HR is to manage the relationship between a company and its employees. This covers hiring, payroll, training, employee relations, and compliance. HR makes sure the company has the right people, and that these people are supported, paid fairly, and treated according to the law.
What are the core functions of HR?
The core functions of HR include recruitment and hiring, onboarding, training and development, employee relations, compensation and benefits, performance management, and compliance. These functions cover the full employee journey, from the time a person is hired to the time they leave the company.
How has the role of HR evolved over time?
HR has changed a lot over the years. Earlier, it was known as personnel and was mostly limited to paperwork, payroll, and records. Today, HR is a more strategic function that works on workforce planning, employee data, and business decisions, along with handling the traditional HR tasks.
What is the difference between HR and human resource management?
HR and human resource management are related but not the same. HR is the function, meaning the team and the daily work it does. Human resource management is the discipline behind it, which includes the strategy and thinking on how a company builds and manages its workforce.
What is the average HR-to-employee ratio?
The average HR-to-employee ratio is around 1.5 to 4.5 HR staff for every 100 employees, as per SHRM. Smaller companies usually have a higher ratio, since they still need basic HR support even with fewer employees. The ratio comes down as a company grows in size.
When should a company hire its first HR person?
Most companies hire their first HR person somewhere between 50 and 75 employees. Before this stage, the founder or an operations lead usually manages HR along with a PEO. As the team grows and the HR work increases, a dedicated in-house HR hire becomes necessary.
What certifications do HR professionals typically hold?
HR professionals hold different certifications that show their expertise. The most common ones are SHRM-CP and SHRM-SCP from SHRM, and PHR and SPHR from HRCI. These certifications cover HR knowledge, compliance, and best practices, and are useful for career growth in the HR field.
What are the modern challenges facing HR teams?
The modern challenges facing HR teams include managing remote and hybrid teams, using AI in a responsible way, and handling a multi-generational workforce. HR also deals with employee retention, growing compliance rules across states, and rising employee burnout. These challenges have made the HR role more complex than before.
Do small companies need a full HR department?
Small companies usually do not need a full HR department. In the early stage, the founder or an operations lead can manage the basic HR work with the help of a PEO. A full HR team becomes necessary only when the company grows, and the HR workload increases.
What HR technology does a mid-market company use?
A mid-market company usually uses a full HR tech stack. This includes an HRIS for employee records, an ATS for hiring, an LMS for training, and tools for performance management and payroll. Many mid-market teams also use an HR ticketing system to manage employee requests in one place.
Closing
HR has come a long way from being a paperwork-heavy function. Today it plays a strategic role in how a company hires, develops, pays, and supports its people. The human resources roles and responsibilities now cover a wide range of areas, from the core functions and people management to modern challenges and technology.
Modern HR works best when its processes and its tools support each other. Good processes keep the daily work organized, and the right tools help HR handle all of it as the company grows. Both of these become equally important with size.
One area where this shows up clearly is HR case management. When employee requests are handled through a proper HR ticketing system instead of scattered emails and messages, HR teams get more visibility and can respond in a more organized way. It is a simple change that helps HR keep up with employee needs as the team grows.
