Length of service calculator 2026
Work out your length of service for a set period, or add up service from several employers. The calculator follows the rules of the Labour Code and the Ordinance on Employment Records and Length of Service.
How is length of service calculated?
Length of service is calculated in days, months and years (Labour Code, Art. 355(1)). A day counts towards length of service if the employee worked at least half of the normal daily working time (Ordinance on Employment Records and Length of Service, Art. 9(2)).
For full-time work (8 hours), the minimum for a day to count towards service is 4 hours. Working less than 4 hours a day, the period does not count towards length of service.
When adding up service from different employers, all the days are added together and normalised: 30 days = 1 month, 12 months = 1 year. This convention is used when making entries in the employment record book.
Rules for calculating length of service
| Condition | Rule | Source |
|---|---|---|
| Minimum for 1 day of service | At least 4 hours of work (1/2 of 8h) | Ordinance on Employment Records and Length of Service, Art. 9(2) |
| 1 full month | All working days in the month | Ordinance on Employment Records and Length of Service, Art. 9(3) |
| Partial months | Total days / 21 = months | Ordinance on Employment Records and Length of Service, Art. 9(4) |
| Adding up | 30 days = 1 month, 12 months = 1 year | Convention |
Labour Code
Art. 355(1)
Official Bulgarian text
„Трудовият стаж се изчислява в дни, месеци и години.“
Ordinance on Employment Records and Length of Service
Art. 9(2)-(4)
Official Bulgarian text
„За един ден трудов стаж се зачита времето, през което работниците или служителите са изработили най-малко половината от максимално установената с Кодекса на труда нормална дневна продължителност на работното време.“
Frequently asked questions
❓How is length of service calculated?
Source: Labour Code, Art. 355; Ordinance on Employment Records and Length of Service, Art. 9
❓Does part-time work count towards length of service?
Source: Ordinance on Employment Records and Length of Service, Art. 9(2)
❓How many days make 1 month of service?
Source: Ordinance on Employment Records and Length of Service, Art. 9(3)-(4)
❓How do you add up length of service from different employers?
Source: Ordinance on Employment Records and Length of Service, Art. 9
❓Is the last working day included in the length of service?
Source: Labour Code, Art. 355
Important
Pravko provides legal information, but it does not replace advice from a lawyer or an official check with the NSSI. For an exact calculation, contact the National Social Security Institute.