How to find experience of person from date of joining to pre

Create table employee (empID Int,Name varchar(50),DOJ Datetime)

insert into employee values(1,'Arnold','2005-02-23')

insert into employee values(2,'Drekel','2009-08-2')

insert into employee values(3,'Frasher','2015-03-25')

insert into employee values(4,'Golavendor','2015-08-27')

Query:1

SELECT p.empID,p.Name,p.DOJ,

CASE

WHEN DATEDIFF(Month, p.DOJ, GetDate()) <=36 THEN 'Below 3'

WHEN DATEDIFF(Month, p.DOJ, GetDate()) > 36 THEN 'Above 3' END AS Exprience

FROM employee p

Query:2

Convert(varchar(10), DATEDIFF(Month, p.DOJ, GetDate()) / 12) + ' Years ' + Convert(varchar(10), DATEDIFF(DAY, p.DOJ, GetDate()) % 30) + ' Months'

FROM employee p