Regardless of your area of expertise, developing writing and oral communication skills are important for a person to be successful in finding a job. If a person develops his/her writing better by reducing the amount of errors, it may give the recruiters a good impression.
Similarly, developing effective communication skills is of paramount importance. If a person can express themselves well and properly in a job interview, recruiters will be aware that he/she will be able to integrate well with teams and represent the company at meetings or any type of event where a message should be given.