The pair have taken early guilty pleas with Sims sanctioned for a high tackle on Brisbane prop Ben Hannant and Maitua punished for a grade-one dangerous throw on South Sydney fullback Greg Inglis.
Eels prop Justin Poore also pleaded guilty to a similar offence on Inglis late in the first half, but will be free to face Penrith in Saturday's clash of the western Sydney strugglers.
Cronulla centre Ben Pomeroy will also escape a suspension after pleading guilty to striking Warriors forward Ben Henry.
Martin Kennedy was also charged for unnecessary use of the knee during Sydney Roosters' win over Wests Tigers on Sunday.
Kennedy pleaded guilty to the offence on Tigers' centre Blake Ayshford but will not face a ban.
Sharks Toyota Cup player Daniel Moroko has been referred straight to the NRL judiciary after being charged with biting Warriors prop Ligi Sao.
Moroko, who is pleading not guilty to the offence, could face a seven-match suspension if found guilty at Wednesday's hearing in Sydney.