Offer Letter · Compensation Discussion
Offer Letter and Compensation Discussion
What Is an Offer Letter?
- An accepted offer is a binding promise by the company
- Itemize base pay, allowances, and bonus, and state conditions
- Verbal promises and late offers are the main reasons candidates drop out
Some people treat an offer letter as a courtesy sent before the contract is written, but court precedent takes a different view. When the company announces the final selection and terms and the candidate accepts, an employment contract can be regarded as formed at that point, and if the company later withdraws the hire, its justification is judged by the same standard as a dismissal. That is because candidates resign from their current jobs relying on that document. An offer letter is both a proposal and a promise that binds the company, so internal approval must be complete before it is sent.
An offer letter should cover the role and grade, work location, start date, salary and its components, probation status and terms, the acceptance deadline, and the conditions for hiring to be confirmed. If the outcome may depend on a reference check, verification of education or experience, or a medical checkup, write those conditions into the document in advance so there is room to cite them as grounds for rescission later. Don’t state only a total salary figure. Break out base pay, fixed allowances, and bonus, with the payment criteria and whether each is guaranteed. A single line such as “X including bonus” is the most common starting point for disputes after joining.
In compensation negotiation, an HR manager needs to hold three numbers: the salary band for the level, what current employees in the same role are paid, and the cost of leaving the position vacant. Adding a flat percentage to the previous salary is simple, but it easily creates pay inversion with current employees. When you need to go above the band, a one-time signing bonus is less disruptive to internal equity than a higher base salary. However, attaching a minimum service period and repayment terms may conflict with the rule prohibiting pre-set penalties, so the wording needs review.
Verbal promises are where things most often go wrong. When an interviewer says "We will promote you to team lead next year" or "Bonuses usually come to about 30%" and it is not in the document, failing to deliver after the hire leads to early resignations. Offering terms that are less favorable than those in the job posting can violate the Fair Hiring Procedure Act. It is also common to lose the second-choice candidate because no acceptance deadline was set and the first candidate spent the time weighing another company's offer. People also forget that an offer letter does not replace the employment contract: at hiring, a separate contract containing all legally required items must be written and handed over.
Kyungtae KimHR expert · Organizational culture and HR strategy consultant
Inwoo LeeLeadership, communication, and performance management expertOffer letters come from US and UK hiring practice, and Korean law prescribes no standard form for them. However, Korean case law has developed the doctrine of confirmed hiring (chaeyong naejeong): a final acceptance notice is treated as establishing an employment relationship, so a later rescission is judged much like a dismissal.
Consider a hypothetical case. Company A makes medical device software and has 150 employees. Over the past year, 19 of its 32 experienced-hire offers were accepted, and 4 of those who accepted left within 3 months of joining, saying "the terms were different from what I was told." The average time a position stayed vacant was 11 weeks.
- When an HR manager phoned to ask why 13 candidates had declined, 7 of them gave a reason that had nothing to do with pay: "The offer took more than 2 weeks, so I signed with another company first."
- The interview records of the 4 early leavers showed that the bonus rate and promotion timing the interviewer mentioned were missing from the offer letter. The head of development said, "I was just giving a sense of how things work."
- The HR director revised the offer template to list base salary, fixed allowances and incentive pay separately, and added a sentence to the incentive section: "Whether incentive pay is paid, and the amount, depends on company performance and evaluation."
- They put salary bands by job level and the median pay of current employees into a table and shared it with hiring managers in advance. For the 3 cases that exceeded the top of the band, they closed the gap with a signing bonus instead of a higher base salary.
- The company issued the offer within 5 days of the final interview and set a 7-day acceptance deadline. It also put a condition on the first page: hiring is confirmed subject to the reference check results.
- Over the next year, 25 of 30 offers were accepted, raising the acceptance rate from 59% to 83%, and departures within 3 months fell from 4 to 1. The average time a position stayed vacant dropped from 11 weeks to 6.