E mōhiotia ana te hangarau whakahaere rerekētanga tae ko tētahi o ngā tikanga tino uaua ki te mātau, ā, he wāhanga nui hoki o te whakahaere kounga hua. Tuatahi, me whai taiao whakaputa e tika ana, tae atu ki ngā kaimahi mātau, ngā mīhini me ngā taputapu matatau, te pāmahana me te haumākū (āhuarangi) o te papa mahi, te wā tauhohenga mahi (tauhohenga matū rauemi mata), ā, whai muri ko te tukanga taurite tae me ngā paerewa tino pakari, me te mahi pono o te toner me ētahi atu rauemi mata. Ko ētahi o ēnei āhuatanga whakahaere ka taea te whakahaere, ko ētahi kāore e taea te whakahaere, pērā i te taiao āhuarangi. Mena ka taea te whakahaere e te kaimahi engari kāore i te pai te whakahaere, he ngāwari te rerekētanga o te tae.

Hei tāpiri, he rerekē te ōwehenga tae o ia wheketere toner, e whakaputa ana i ngā mahi matū rerekē ki ngā rau kiriaku rerekē, e kīia ana he rerekē te turanga tae, ā, he rerekē te pānga o ngā whakaata kiriaku tae, inā koa he iti noa te rerekētanga tae o ngā puranga whakaata kiriaku rerekē, he mea kore e taea te karo.