The ornamental design for a footing platform assembly for working, as shown and described.
FIG. 1 is a front elevational view of the footing platform assembly for working in a condition that a pair of safety poles and the safety guardrail frames are provided on each of the front and rear sides of the platform part;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a right side elevational view thereof; and,
FIG. 5 is a perspective view of the footing platform assembly for working in a condition that a pair of safety poles and the safety guardrail frames are provided on each of the front and rear sides of the platform part.