Questions around the process of Mr Kemp's return to rugby were raised after he was issued with Northland's, and the world's, first blue card after he suffered a head knock earlier in the season.
As per the blue card system, he was removed from the field and forced to follow the return to play protocols as set down by New Zealand Rugby.
Otamatea premier coach Dean Kenny assured the Advocate the club, and Mr Kemp, had followed the protocols, despite the player wishing to return before being issued a medical clearance.
The guidelines state a player should see a doctor within 24 hours, before resting and doing no activity for about three days, depending on cognitive and symptom recovery. From there, players are able to move into light aerobic exercise such as walking or stationary cycling after four to 10 days.
Depending on recovery rate, after that 10-day mark players can move into sport-specific training such as running or ball work. It is only at the 21-day mark that players are able to return to contact work. However, before a player may take part in a game, the NRU must receive documentation which declares a doctor has medically cleared that player to return.
Mr Kenny said Mr Kemp had done that and had been back playing for a number of weeks without suffering any concussion symptoms - including being forced by the club to wear headgear for some of that time.