In the process of payroll calculation, some pay items need to be calculated to value the employee’s start/end date of attendance, start/end date of payroll calculation period, and date of pay day, then calculate the difference of days/months/years between these start and end dates.

Workstem provides relevant functions:

DateDiff( , , ,), DateAdd( , , ,), PayRunCycleStartDate(), PayRunCycleEndDate(), PayRunAttendStartDate(), PayRunAttendEndDate(), PayRunPayDate().

In the calculation of pay items, you can flexibly use such functions. The use of these functions is described in detail below:

[Payroll] > [Settings] > [Pay Items] > [Settings]

Click [Settings], go to [Pay Items], find the corresponding item that needs to set the formula, click [Formula], or add new item to formula setup step, and go to [Pay Items] formula setting interface.

1. Functions DateDiff(Date Part, StartDate, EndDate,), PayRunCycleStartDate() , PayRunCycleEndDate()

a. DateDiff(Part, StartDate, EndDate)

Function description: Calculate the time difference between two specified dates

Parameter list:

Optional range of Date Part: DAY / MONTH / YEAR

Format of StartDate/EndDate: YYYY-MM-DD

Example:

// The result is 364

var c = DateDiff (DAY, '2019-01-01', '2019-12-31')

// The result is 11

var d = DateDiff (MONTH, '2019-01-01', '2019-12-31')

b. PayRunCycleStartDate()

Function description: Return the start date of the current payroll calculation period

No parameter

Example:

// If the current payroll calculation period is 2020-03-01 to 2020-03-31.

The result is 2020-03-01

var b = PayRunCycleStartDate()

c. PayRunCycleEndDate()

Function description: Return the end date of the current payroll calculation period

Method: PayRunCycleEndDate ()

No parameter

Example:

// If the current payroll calculation period is 2020-03-01 to 2020-03-31.

The result is 2020-03-31

var a = PayRunCycleEndDate ()

2. Functions DateAdd(Part, number, Date), PayRunAttendStartDate(), PayRunAttendEndDate()

a. DateAdd(Part, number, Date)

Function Description: Calculate a specific date

Parameter Description:

Optional range of Date Part: DAY / MONTH / YEAR

Date: Full date YYYY-MM-DD

Number：Integer, the value of date calculated forwards (positive number) or backwards (negative number)

Example:

// The result is 2019-12-15

var a = DateAdd (DAY, -5, '2019-12-20')

// The result is 2020-05-20

var b = DateAdd (MONTH, 5, '2019-12-20')

b. PayRunAttendStartDate()

Function description: Return the start date of attendance period used in the current payroll calculation period

No parameter

Example:

// If the attendance time used in the current payroll calculation period is 2024-05-01 to 2024-05-31.

// The result is 2024-05-01

var c = PayRunAttendStartDate ()

c. PayRunAttendEndDate()

Function description: Return the end date of attendance period used in the current payroll calculation period

No parameter

Example:

// If the attendance time used in the current payroll calculation period is 2024-05-01 to 2024-05-31.

The result is 2024-05-31

var d = PayRunAttendEndDate ()