to obey; to follow an agreement, a decision or a rule
accountable
The company's management will be held accountable for the health and safety of employees. The tax reforms made local government units more accountable for their spending.
The builders asked to be paid in advance, before the commencement of the construction. Should you wish to see me this week, please let me know in advance.
if the payment is made before it is due, or something happens before a particular time or before a particular event
arrears
I received a letter from the insurance company informing me that I was in arrears; no payment had been recorded for the past three months. Maintenance contracts are usually paid in arrears, monthly or quarterly.