Members of the South African National Defence Force working at the border posts demand a fifteen percent salary increase because, they claim, 'we work in bushes, remote from our families, and are exposed to physical danger and foreign illnesses associated with the bush life. This is not social'. They gave the government an ultimatum to respond positively within a month, failing which, they will strike. With reference to relevant legal authority, discuss whether the ultimatum by the SANDF to strike is legally possible