# Probability of staff exiting a company

#### Vic1234

##### New Member
Urgent help required to determine the probability of an employee leaving a company after n number of years employed by the company.
Say the annual turnover rate or employees leaving the company is 22%.
How do I determine the probability of someone who has been employed by the company leaving after 2 years, 3 years, 4 years, 5 years etc.
Is there a way to derive the probability?
Assistance required

#### Dason

If that's the only info you have then you would probably need to make some sort of independence assumption. It's probably not reasonable if this is an actual real life problem though.

#### hlsmith

##### Less is more. Stay pure. Stay poor.
You don't have the length of employment for the previous people that weren't retained? Are an assumption about it?

#### Karabiner

##### TS Contributor
Is this a real world problem? In which context?

Or, is it a homework problem? For what kind of course? Which knowledge is assumed for this?

With kind regard

Karabiner

#### Dason

Honestly with the way it was worded and the information given my assumption is that this is just a homework problem

#### fed2

##### Active Member
you can make a box-plot of the leaving times

#### Dason

you can make a box-plot of the leaving times
With the information given I don't think they can and it wouldn't help answer the question asked.

#### noetsi

##### No cake for spunky
Cox proportional hazard is the classical way to do this type of thing I think, although you probably don't have enough data to make it work.

#### fed2

##### Active Member
thats a good idea lets run a box-plot and cox proportional hazards on this homework problem then.

#### Vic1234

##### New Member
We do have the average tenure of employees that have not yet left the organisation. for example, those employed for 1 year, those employed for 2 years, 3 years etc

#### Vic1234

##### New Member
You don't have the length of employment for the previous people that weren't retained? Are an assumption about it?
We have data for the length of service for the employees that left and those that remained.