The aims of this study are to find out (1) the types of code mixing found in WhatsApp Group cargo department by the staffs at Ngurah Rai Airport and (2) to analyse the reason of code mixing found in the WhatsApp Group by the staff at Ngurah Rai Airport. The data were taken from chat of cargo department staff in WhatsApp Group at Ngurah Rai Airport. The method of collecting data was starting from March 1 to 30, 2021. The analysis was done by applying descriptive qualitative method requires documentation to identify the types of code-mixing, purposed theory by Hoffman (1991) about the types of code mixing and the purposed reason of code-mixing theory from Holmes (2013). The result of this study shows that there two of three types that found in the WhatsApp Group cargo department by the staff at Ngurah Rai Airport, there are: Intra-sentential code mixing, intra-lexical code mixing and involvement in a change of pronunciation. The type of Intra-Sentential code-mixing was more commonly found in chat conversations by the staffs on WhatsApp group, who stated that it was easier not to change the language in the cargo world, which primarily used English, to keep it easier for interact and avoid misunderstandings in the handover of their assignments or job desks. Because this research is based on chat messages in a WhatsApp Group, types of involvement in a change in pronunciation can be identified because that type is part of speech. The reason of code-mixing purposed theory by Holmes (2013) there are four reasons, namely: Topic, participant, solidarity and status. Because the relationship between employees provided information about the duties being carried out between divisions, the topic became one of the most common causes for identifying code mixing in chat chats in WhatsApp groups by cargo department staff.

This study has two purposes, those are (1) to find out the types of code-switching used in conversation between Daniel Mananta and Raline Shah in “Daniel Tetangga Kamu” video YouTube channel and 2) to identify the functions of code-switching used in conversation between Daniel Mananta and Raline Shah’s utterances. A qualitative method is used for this study for analyzing the data collected from five videos. The method is applied to give a clear description of the data according to the theory proposed by Poplack (1980) as cited in Romaine (1989: 122) about the three types of code switching. The result of this analysis showed that there was three types of code switching found in this conversation are; Tag switching, intra-sentential switching and inter-sentential switching. Type of code-switching which is intra-sentential switching is the most often used in conversation between Daniel Mananta and Raline Shah utterances because they was more comfortable when using words, clauses, and phrases in one sentence to convey motivational messages. And the theory proposed by Appel and Muysken (1987) about the six functions of code switching. In this analysis showed that there was six function of code switching are; referential, directive, expressive, phatic, metalinguistic and poetic. Metalinguistic is the dominant function of code-switching in conversation between Daniel Mananta and Raline Shah’s utterances. It occurs because Daniel Mananta and Raline shah wanted to impress the other participants with a show of linguistic skill.