You claim that your country is an underdeveloped country so we can assume that bitcoin is not legal in your country, if bitcoin is not legal then it will be safe for you to pay salary through bitcoin. Just saying from my opinion about bitcoin legality because as you mentioned your country is underdeveloped and as far as I know underdeveloped countries never accept bitcoin. It is a very good decision if you proceed with caution. Accepting payments through Bitcoin instead of accepting payments in local currency is another level of thinking. If you accept payment through bitcoin, you can hold that bitcoin for a long time if you want, and if you want, you can sell your btc through P2P.  Undoubtedly, you have taken a commendable initiative.