If you aren’t going to use the “Business use of Home” section, then you can enter your phone expense in the box marked “How much did you pay for Telephone and Utilities on your business property?”. You can claim the safety clothing as Other Expenses.
If you took the safety courses to acquire new skills, then you can’t claim them as business expenses. However, you might still be able to claim the Tuition credit or the Canada training credit (CTC) for those courses. If you were just upgrading existing skills, then you can also put the courses in Other Expenses.
