I have to calculate trade payable payment period for a given financial statement. In it they haven't given trade parables directly, instead there is a figure called “other liabilities”.
Other liabilities consist of -

1. Policyholder Advance Payment
2. Agency Commission Payable
3. Government Levies Payable
4. Reinsurance Creditors
5. Other Creditors Including Accrued Expenses
6. Outstanding Claims - Life Insurance.

When taking trade payable into consideration should I get the total of other liabilities or just "Other Creditors Including Accrued Expenses" ?
Please help

Well I expect you have a total for liabilities, but this seems to be an insurance company so what constitutes "trade"? The statistic you are trying to calculate is intended to give a measure of the degree the organisation is using trade credit to finance the business and how well they manage cash flows. I think you need to think about materiality and it is likely the big ticket items are

1. Agency Commission Payable
2. Government Levies Payable
3. Reinsurance Creditors