Ajir ikki turga bo‘linadi: xos (xoss) va umumiy (om). Xos ajir – bu ma’lum bir kishi uchun yoki bir necha kishi uchun, muayyan davr ichida, davriy ish bilan, aniq shart bilan ishlaydigan kishi, ya’ni u faqat ish beruvchiga tegishli bo‘lib, ijara muddati davomida boshqa birovga ishlashdan man etiladi. Masalan, agar bir kishi yoki bir necha kishi ma’lum muddatni belgilagan holda, faqat o‘zi uchun ovqat pishirishga oshpaz yollasa, bu oshpaz xos ajirdir. Umumiy ajir – bu doimiy ishlamaydigan yoki vaqtincha ishlaydigan, o‘ziga xoslik shartini qo‘ymagan kishi, ya’ni u ish beruvchiga xos qilib berilmagan. Aksincha, unga ish beruvchidan boshqa kishilar uchun ishlashi ruxsat etiladi. Agar kimdir uy jihozlarini yasovchi duradgorni yollasa va unga boshqa birovning ishini qilmaslik shartini qo‘ymasa, u holda bu duradgor umumiy ajir hisoblanadi, u sizning uyingizda bo‘lsinmi yoki o‘z ustaxonasida bo‘lsinmi, va unga jihozlarni yasash uchun vaqt belgilangan bo‘lsinmi yoki yo‘qmi, farqi yo‘q.

The employee is divided into the specific (khaas) and the common (aam). The specific employee is the one who works for some one specifically or more in periodic work with specification i.e. he is the one assigned exclusively to the employer alone and is prevented from working for anyone else throughout the period of hiring. For example if one person or more hires a cook to cook for him specifically together with specifying the period, this cook is a specific employee. The common employee is the one who does not work constantly or works temporarily without stipulating specification upon himself i.e. he is the one not assigned exclusively to the employer. Rather it is permitted for him to work for other than the employer. If he were to hire an carpenter of house furniture without stipulating upon him that he should not upholster for another, then he is a common employee whether he was in your house or in his place and whether a time for upholstery was specified for him or not.