Cabinet ministers, like all ministers, are appointed and may be dismissed by the monarch without notice or reason, on the advice of the prime minister. The allocation and transfer of responsibilities between ministers and departments is also generally at the prime minister's discretion. The Cabinet has always been led by the prime minister, whose originally unpaid office as such was traditionally described as merely "primus inter pares" (first among equals), but today the prime minister is the preeminent head of government, with the effective power to appoint and dismiss Cabinet ministers and to control the Cabinet's agenda. The extent to which the Government is collegial varies with political conditions and individual personalities.