Compensation System · Job-Based Pay and Seniority-Based Pay
Compensation System (Job-based vs. Seniority-based Pay)
What is a compensation system?
- Combining seniority-based, job-based, skill-based, and performance-based pay
- Each component drives different behavior
- Reform is a matter of consensus and legal procedure, not technique
What a compensation system really changes is not the pay-raise table but the paths people take through the company. Under seniority-based pay, the next paycheck is the same whether someone takes a hard role or stays in a comfortable one, so people pass difficult assignments around and simply put in their years. Under job-based pay, pay moves as soon as someone changes roles, so placement, promotion, and pay for experienced hires can all be explained on one table. The flip side is that pay stalls for people who stay in the same role for a long time, so when you revise the pay table, rework career paths at the same time.
In practice, the choice is not seniority-based versus job-based pay but how much weight each gets. A common design sets base pay by job grade and gives each grade a band within which pay can move up or down. If the gap between the band floor and ceiling is 20–30%, pay within the same grade still diverges with skill and performance. The narrower the band, the more job-based the system becomes, and the wider it is, the closer it comes to skill-based pay. Skill-based pay values a person’s proficiency, so if you set only qualification or tenure requirements and never reassess, it drifts back to seniority-based pay within a few years.
The difficulty of an overhaul lies in the process, not the design. For a company where fixed allowances have grown larger than base pay, the first task is to clean up the allowances. Doing so changes the scope of ordinary wages, which in turn moves overtime pay and severance calculations in a chain reaction. The moment even one person’s pay would fall, it counts as an unfavorable change to the rules of employment. That requires consent from a majority of workers or a majority union, and a pay table implemented without consent can be challenged in a dispute. Because the relevant laws and administrative interpretations may be amended, also consult the latest Ministry of Employment and Labor guidance and a labor expert.
Two points go wrong most often in practice. One is splitting the pay table by job family without any job evaluation and calling it job-based pay; if you cannot explain the basis for each grade, grades end up assigned by years of service. The other is making the allowance that protects existing employees permanent. If the pay gap between a new hire and an incumbent doing the same work stays frozen for years, the new system becomes a half-measure that applies only to new hires, and the company ends up with a dual pay structure. Protect existing pay if you must, but set the duration and the phase-out method from the start.
Kyungtae KimHR expert · Organizational culture and HR strategy consultant
Jongmu KimCorporate talent development and job competency specialistJob-based pay, which sets wages by evaluating the value of the job, spread in the West in the early 20th century alongside advances in job evaluation methods. In Korea, seniority-based pay took hold during the high-growth era, and discussions on reforming the pay structure have continued since.
This is the story of Company A, an auto parts manufacturer. With 240 employees and annual revenue of about KRW 90 (≈ US$1) billion, it runs two separate systems: a 31-step seniority-based pay scale for production staff and an annual salary system for office and technical staff. It tried to hire a design engineer with 7 years of experience, but its own 10-year engineer earned less than the market rate, so after three months of failed hiring, the CEO asked HR for a redesign plan within six months. (Hypothetical example)
- The HR director pulled the last three years of payroll records and found a pay mix of 48% base pay, 31% fixed allowances, and 21% bonuses. The conclusion: 80% of our pay goes out regardless of the work people do.
- After the job analysis task force grouped 46 jobs into 12 job families and rated them on three criteria (difficulty, responsibility, and replaceability) to build a five-grade table, production foremen objected, asking 'why is our team Grade 3?'
- The simulation showed that 37 of 240 employees were already above the ceiling of their new grade, so the company decided to pay them the difference as an adjustment allowance, phased down over three years, and to apply the new table in full starting with new hires.
- After three briefing sessions with the labor-management council and a review by a labor attorney, the company won consent from a majority of employees. A production-floor representative asked for a written guarantee that pay would not be cut, so the protection clause went into a supplementary agreement.
- One year after rollout, the company hired four experienced design engineers, average time-to-hire fell from 87 days to 41, and the share of fixed allowances dropped from 31% to 12%, which also removed the risk of ordinary-wage disputes.