The order was issued on Sunday, four days after the king unveiled first benefits worth around $36 billion for Saudi nationals to tackle unemployment and housing issues, state news agency, SPA, reported.
The monarch started unveiling benefits after his return from three months of medical treatment abroad on Wednesday.
Analysts say that such measures are aimed at insulating the kingdom from the wave of protests that have engulfed the Arab world.
Saudi opposition groups, however, say such bonuses could never replace political reforms.
The world's top oil exporter has so far escaped major protests against poverty, corruption and oppression that have engulfed the region, toppling entrenched leaders in Egypt and Tunisia and reaching neighbors Bahrain and Oman.
On Thursday, Saudi protesters took to the streets in Qatif region to demand political reforms and the release of political prisoners held without trial.
Meanwhile, some Saudi youths have named March 13 the "Day of Rage" on the social networking website, Facebook. Thousands of people have said they would attend the protests.
No political reforms, such as municipal council polls, have accompanied the state handouts despite repeated calls by opposition groups.
In an open letter published on Sunday, around 100 Saudi intellectuals, activists and university professors called on the king to launch political reforms and allow citizens to have a greater say in ruling the country.
They called for a "rule of law to which all -- government officials and citizens -- would be subjected."
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