CASE $14\mathrm{.}5$INTEGRAL AND INDISPENSABLE PRE$-$ AND POST$-$WORK SHIFT ACTIVITIES ARE COMPENSABLEIBP, INC. v$.$ ALVAREZ$546$ U$.$S$.21(2005)$Supreme Court of the United States. If the employees have the option and the ability to change into the required gear at home, is changing into that gear a principal activity when it takes place at the plant? Why or why not?If the employees have the option and the ability to change into the required gear at home, is changing into that gear a principal activity when it takes place at the plant? Why or why not?