The formula to calculate the months of service is:
\[ M = (Y_e - Y_s) \times 12 + (M_e - M_s) \]
Where:
Months of service refers to the total number of months an individual has worked or served in a particular role or organization. This metric is often used in employment contexts to determine eligibility for benefits, promotions, or other employment-related considerations. It can also be used in other contexts where the duration of service or participation is relevant.
Example 1:
Step 1: Subtract the start year from the end year and multiply the result by 12:
\[ (2023 - 2020) \times 12 = 36 \]
Step 2: Subtract the start month from the end month and add the result to the previous calculation:
\[ 36 + (3 - 5) = 34 \]
The Months of Service (M) is 34 months.
Example 2:
Step 1: Subtract the start year from the end year and multiply the result by 12:
\[ (2021 - 2019) \times 12 = 24 \]
Step 2: Subtract the start month from the end month and add the result to the previous calculation:
\[ 24 + (12 - 1) = 35 \]
The Months of Service (M) is 35 months.